Annex 3. Rod and net catches; and juvenile salmon and trout data

Transcription

1 Annex 3. Rod and net catches; and juvenile salmon and trout data Annex 3. Rod and net catches; and juvenile salmon and trout data This Annex presents a catchment by catchment summary of the net and rod catch statistics for all of the principal salmon and sea trout rivers. It also presents the results of the juvenile salmonid monitoring programme for the 32 surveyed catchments in Wales. A Wales-wide summary is also shown of the rod catches and juvenile salmonid populations and trends. Details of how these data are collected are given below. Nets Net (and rod) licencees in E&W have a statutory duty to submit annual catch returns. For net fisheries this includes daily information on tides fished, the number of salmon and sea trout caught and their individual weights. Since the introduction of carcass tags in 29 to control the sale of illegally caught fish, these details have had to be recorded in a log book along with the number of the carcass tag applied to each fish. Net catch records (1975 to 215) for salmon and sea trout are given here where a fishery is or was active on a river. Numbers are from the official reported catch, and no correction is made for under-reporting or illegal fishing. Rods A national rod licence for salmon and migratory trout has been in place in E&W since This and an associated catch return and reminder system has operated since that time and is one of the most consistent and comprehensive catch recording systems in Europe. The national catch recording system replaces a series of regional and river based systems of variable quality some of which extend back to the 19s or earlier. The national catch recording system provides information on each fish caught as well as the activity of fishermen. This includes: weight of individual fish whether killed or released date and river of capture method of capture (fly/spin/bait) total number of days fished each season Rod catch records for salmon and sea trout given here are from 1975 to 215; they are declared catches from licence returns and are not corrected for under-reporting. The exception to this is the river Wye, where owners returns are used due to a more complete record. Catch and release has only been reported since 1993, figures before this date are for total catch - killed and released.

2 Annex 3. Rod and net catches; and juvenile salmon and trout data Juvenile salmonid classifications 216 The monitoring programme comprises Temporal surveys - a number of fixed sites surveyed annually; and Spatial surveys considerable more sites spread across the catchment and surveyed every 6 years as a snapshot of fish populations. The number of sites in the temporal and spatial programmes varies between catchments and is related to the size of the catchment. Densities calculated from quantitative (3 run catch depletion) and semi-quantitative (single run) surveys are used to assign a classification for salmon fry (+) and parr (>+) and for trout fry (+) and >+ (parr and adults combined) at each site, from A Excellent through to F Fishless. The National Fish Classification (NFC) evaluates and compares the results of fish population surveys in a consistent manner; ranking survey data by comparing fish abundance at the survey sites with sites nationally where juvenile salmonids are present. The following table shows the values and classification of NFC. Grade Descriptor Interpretation A Excellent In the top 2% for a fishery of this type B Good In the top 4% for a fishery of this type C Fair In the middle 2% for a fishery of this type D Fair In the bottom 4% for a fishery of this type E Poor In the bottom 2% for a fishery of this type F Fishless No fish of this type present The maps below show the results of the routine juvenile salmonid population surveys from 216. Catchment population trends The graphs show a simple comparison of average salmon and trout densities across the catchments since 22; this is only shown for catchments with at least 4 annual monitoring sites. The data used are only from surveys of the same methodology at sites in the current Welsh monitoring programme. It is not necessarily the case that every site in the programme was done every year. A linear trend analyses using Minitab was carried out on each of these catchments and a statistical significance attached. The linear model fits a straight line to the data in order to determine whether a trend (upwards or downwards) is present in fish numbers over the timeframe. The statistical significance of the trend is denoted by the P value, P<.5 indicates statistical significance (where there is >95% confidence that the trend is not due to chance). The graphs presented show the trend line with associated confidence intervals. Know Your Rivers Reports For catchment specific information on fisheries statistics, including action plans, please refer to the Know Your Rivers reports on the Natural Resources Wales website.

3 Annex 3. Rod and net catches; and juvenile salmon and trout data 216 juvenile salmonid population survey results Routine monitoring in 216 revealed fry numbers, especially young salmon hatched in the spring of 216 at critically low levels on a number of principal catchments. These were rivers which had previously produced consistent salmon fry numbers. The maps (Figs 1a and 1b salmon; 2a and 2b trout) and Table 1 below show a comparison of these 216 juvenile survey results as compared to the 5-year average. The raw densities for sites in each catchment can be seen further on in this Annex. Many of these catchments only have 1 or 2 survey sites, and so certainty around trends is reduced, especially for example on the Rhymney where any variation in the very low numbers of salmon caught may result in big percentage differences Table juvenile salmon and trout results compared to the 5-year average River Salmon Trout No of + >+ + >+ Sites Aeron -93% -49% -65% 1% 2 Afan -47% -5% -8% -13% 2 Cleddau (East) -1% -1% -69% -38% 2 Cleddau (West) -43% -31% -94% -3% 2 Clwyd -1% -89% -89% 12% 5 Conwy -8% -28% 2% -25% 4 Dee -44% -1% -21% 4% 11 Dwyfawr -46% -84% -36% -85% 1 Dwyryd -49% -47% -65% 28% 1 Dyfi -95% -43% -7% -18% 4 Ely -9% -34% -64% 62% 1 Erch -1% -1% 57% 44% 1 Glaslyn -7% 7% -32% 37% 1 Gwendraeths -1% -1% -84% -22% 2 Loughor -1% -1% -69% -12% 1 Mawddach -8% -45% -28% 68% 2 Neath -1% -1% 17% -39% 2 Nevern -93% -4% -37% 98% 2 Ogmore -73% -7% -77% -33% 2 Ogwen -43% -43% -31% -3% 1 Rhiedol -1% % -43% 15% 1 Rhymney 983% 4% -13% 16% 2 Seiont 11% -3% -12% -3% 1 Severn -55% 11% -53% 3% 16 Taf -66% -3% -47% -4% 4 Taff -1% -1% 25% -49% 1 Tawe 12% 13% -44% -46% 2 Teifi -86% -33% -33% 25% 6 Tywi -82% -49% -81% -16% 13 Usk -97% -52% -67% -22% 13 Wye -58% -51% 2% 5% 24 Ystwyth -1% -1% -63% 79% 2

4 Annex 3. Rod and net catches; and juvenile salmon and trout data Figure 1a Change in salmon fry density Figure 1b Change in salmon parr density

5 Annex 3. Rod and net catches; and juvenile salmon and trout data Figure 2a Change in trout fry density Figure 2b Change in trout parr density

6 All Wales All Wales Salmon Rod Catch Salmon Killed Salmon Released All Wales Sea Trout Rod Catch Sea Trout Killed Sea Trout Released

7 Density fish/1m Density fish/1m2 All Wales Welsh Average Densities of Salmon Salmon >+ Salmon Welsh Average Densities of Trout Trout >+ Trout

8 All Wales

9 River Aeron 6 Aeron Salmon Rod Catch Rod Killed Rod Released Aeron Sea Trout Rod Catch Rod Killed Rod Released There is no salmon or sea trout net fishery on the Aeron

10 River Aeron

11 River Aeron Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) River Site name Year Average ( ) % Change from 215 % Change from 5 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Aeron - AE % -95% -46% Aeron - AE % + -85% -52% Average % 391% -93% -49% River Site name Year Average ( ) % Change from 215 % Change from 5 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Aeron - AE % 124% -54% -39% Aeron - AE % 28% -78% 48% Average % 49% -65% 1%

12 River Afan Afan Salmon Rod Catch Rod Killed Rod Released Afan Sea Trout Rod Catch Rod Killed Rod Released There is no salmon or sea trout net fishery on the Afan

13 River Afan

14 River Afan Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) River Site name Year Average ( ) % Change from 215 % Change from 5 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Afan - AF % 28% -29% 24% Pelenna - AF % % % -1% Average % 28% -47% -5% River Site name Year Average ( ) % Change from 215 % Change from 5 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Afan - AF % -54% -68% -18% Pelenna - AF % -14% -96% 8% Average % -42% -8% -13%

15 Cleddau Rivers (Eastern and Western) 4 Cleddau Salmon Rod Catch Cleddau Sea Trout Rod Catch Rod Killed Rod Released Rod Killed Rod Released 14 Cleddau Salmon Compass Net Catch Cleddau Sea Trout Compass Net Catch Salmon Sea trout

16 Density fish/1m Density fish/1m2 Cleddau Rivers (Eastern and Western) Cleddau Catchment Average Densities of Salmon Salmon >+ Salmon Cleddau Catchment Average Densities of Trout Trout >+ Trout

17 Cleddau Rivers (Eastern and Western)

18 Cleddau Rivers (Eastern and Western)

19 Cleddau Rivers (Eastern and Western) Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) Catchment Cleddau (East) Cleddau (West) River - Site Name Year Average ( ) % Change from 215 % Change from 5 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Afon Rhyd Afallen - EC % % % -1% Wern - EC % -1% -1% -1% Average % -1% -1% -1% Anghof - WC7A % -1% -36% -31% Trerhos - WC % -16% -1% -32% Average % -7% -43% -31% Catchment Cleddau (East) Cleddau (West) River - Site Name Year Average ( ) % Change from 215 % Change from 5 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Afon Rhyd Afallen - EC % -29% -87% -3% Wern - EC % -34% -34% -52% Average % -31% -69% -38% Anghof - WC7A % 87% -83% 1% Trerhos - WC % -32% -1% -46% Average % % -94% -3%

20 River Clwyd 3 Salmon rod catch, River Clwyd Sea Trout rod catch, River Clwyd Rod Killed Rod Released Rod Killed Rod Released 15 Salmon net catch, River Clwyd Sea Trout net catch, River Clwyd Sling net Sling net

21 Density fish/1m Density fish/1m2 River Clwyd Clwyd Catchment Average Densities of Salmon Salmon >+ Salmon Clwyd Catchment Average Densities of Trout Trout >+ Trout

22 River Clwyd

23 River Clwyd

24 River Clwyd Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) 5 Year Average % Change from % Change from River Site ( ) year average Name Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Aled % -83% -1% -87% Clwyd % -81% -1% -86% Clywedog % -1% -1% -1% Elwy % 47% -1% -64% Ystrad % -1% -1% -1% Average % -81% -1% -89% River Site Name Year Average ( ) % Change from 215 % Change from 5 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Aled % -51% -98% -21% Clwyd % -12% -93% 48% Clywedog % 7% -75% 31% Elwy % 39% -97% 95% Ystrad % -73% -85% -61% Average % -2% -89% 12%

25 River Conwy Salmon rod catch, River Conwy Sea Trout rod catch, River Conwy Rod Killed Rod Released Rod Killed Rod Released 4 Salmon net catch, River Conwy Sea Trout net catch, River Conwy Net & Fixed engines Net & Fixed engines

26 Density fish/1m Density fish/1m2 River Conwy Conwy Catchment Average Densities of Salmon Salmon >+ Salmon Conwy Catchment Average Densities of Trout Trout >+ Trout

27 River Conwy

28 River Conwy

29 River Conwy Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) Year Average ( ) % Change from 215 % Change from 5 year average River Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Lledr % 22% -75% 13% Merddwr % -39% -8% -79% 39.1 Nant Y Goron % 2% -96% 5% Roe % -45% -1% Average % 2% -8% -28% 5 Year Average % Change from % Change from ( ) year average River Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Lledr % 43% 8% 65% Merddwr % -1% -88% -1% Nant Y Goron % -24% -32% -1% Roe % -45% 39% -3% Average % -42% 2% -25%

30 River Dee 12 Salmon rod catch, River Dee Sea Trout rod catch, River Dee Rod Killed Rod Released Rod Killed Rod Released Salmon net catch, River Dee Sea Trout net catch, River Dee Trammel & Seine Trammel & Seine

31 Density fish/1m Density fish/1m2 River Dee Dee Catchment Average Densities of Salmon Salmon >+ Salmon Dee Catchment Average Densities of Trout Trout >+ Trout

32 River Dee

33 River Dee

34 Juvenile salmon densities 211 to 216 (fish per 1m 2 ) River - Site Name River Dee Year Average ( ) % Change from 215 % Change from 5 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Abbey Brook % 36% -79% -53% Ceidiog % 77% -52% 242% Ceiriog % -8% -94% -47% Ceirw % -21% -93% -38% Clywedog % -4% -1% -76% 284 Hirnant % 82% 72% 55% Little Dee % % -1% -1% Meloch % 71% -92% 21% Merddwr % 13% 46% -13% Morwynion % + -1% -76% 54 Mynach % -13% 5% 11% Average % 14% -44% -1%

35 Juvenile trout densities 211 to 216 (fish per 1m 2 ) River - Site Name River Dee 5 Year Average % Change from % Change from ( ) 215 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Abbey Brook % -1% -33% -72% Ceidiog % 17% -58% 2% Ceiriog % -33% -17% -41% Ceirw % -6% -21% -32% Clywedog % -16% -84% -15% Hirnant % 88% -2% 246% Little Dee % -22% -66% -13% Meloch % 151% -11% 82% Merddwr % 117% 24% 7% Morwynion % 99% -14% -31% Mynach % 17% -36% 112% Average % 31% -21% 4%

36 River Dwyfor 14 Salmon rod catch, River Dwyfor Rod Killed Rod Released 3 Sea Trout rod catch, River Dwyfor Rod Killed Rod Released There is no net fishery for salmon or sea trout on the Dwyfor

37 River Dwyfor

38 River Dwyfor Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) River - Site Name Year Average ( ) % Change from 215 % Change from 5 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Dwyfawr % -76% -46% -84% Year Average ( ) % Change from 215 % Change from 5 year average River Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Dwyfawr % -87% -36% -85%

39 River Dwyryd Salmon rod catch, River Dwyryd Sea Trout rod catch, River Dwyryd Rod Killed Rod Released Rod Killed Rod Released 35 Salmon net catch, River Dwyryd Sea Trout net catch, River Dwyryd Seine Seine

40 River Dwyryd

41 River Dwyryd Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) River Site name Year Average ( ) % Change from 215 % Change from 5 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Teigl % 67% -49% -47% River Site name Year Average ( ) % Change from 215 % Change from 5 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Teigl % 148% -65% 28%

42 River Dyfi 7 Salmon rod catch, River Dyfi Sea Trout rod catch, River Dyfi Rod Killed Rod Released Rod Killed Rod Released 3 Salmon net catch, River Dyfi Sea Trout net catch, River Dyfi Seine Seine

43 Density fish/1m Density fish/1m2 River Dyfi Dyfi Catchment Average Densities of Salmon Salmon >+ Salmon Dyfi Catchment Average Densities of Trout Trout >+ Trout

44 River Dyfi

45 River Dyfi

46 River Dyfi Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) River Site Name Year Average ( ) % Change from 215 % Change from 5 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Crewi % -67% -1% -76% Dulas N % % % % Dyfi % -3% -94% -31% Iain % -1% -1% -1% Average % -24% -95% -43% River Site name Year Average ( ) % Change from 215 % Change from 5 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Crewi % -13% 13% 47% Dulas N % -49% 9% -47% Dyfi % -45% 39% -47% Iain % -12% -51% -16% Average % -29% -7% -18%

47 River Dysynni 35 Salmon rod catch, River Dysynni Sea Trout rod catch, River Dysynni Rod Killed Rod Released Rod Killed Rod Released Salmon net catch, River Dysynni Sea Trout net catch, River Dysynni Seine Seine

48 River Dysynni No surveys were carried out on the Dysynni during 216 due to high flows. The following maps show the juvenile salmonid survey data collected in 215.

49 River Dysynni Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) Year Average ( ) % Change from 215 % Change from 5 year average River - Site Name Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Dysynni River - Site Name Year Average ( ) % Change from 215 % Change from 5 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Dysynni

50 River Glaslyn Salmon rod catch, River Glaslyn Sea Trout rod catch, River Glaslyn Rod Killed Rod Released Rod Killed Rod Released 8 Salmon net catch, River Glaslyn Sea Trout net catch, River Glaslyn Seine Seine

51 River Glaslyn

52 River Glaslyn Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) River - Site Name Nant Gwynant Year Average ( ) % Change from 215 % Change from 5 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + > % 22% -7% 7% River - Site Name Nant Gwynant Year Average ( ) % Change from 215 % Change from 5 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + > % + -32% 37%

53 River Gwendraeth 7 Gwendraeth Salmon Rod Catch Rod Killed Rod Released Gwendraeth Sea Trout Rod Catch Rod Killed Rod Released There is no salmon or sea trout net fishery on the Gwendraeth

54 River Gwendraeth

55 River Gwendraeth Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) River Site name 5 Year Average % Change from % Change from ( ) year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Gwendraeth Fawr - GR % % -1% % Gwendraeth Fach - GH % % -1% -1% Average % % -1% -1% River Site name Year Average ( ) % Change from 215 % Change from 5 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Gwendraeth Fawr - GR % 13% -82% -3% Gwendraeth Fach - GH % -54% -1% -72% Average % 67% -84% -22%

56 River Gwyrfai Salmon rod catch, River Gwyrfai Rod Killed Rod Released Sea Trout rod catch, River Gwyrfai Rod Killed Rod Released There is no net fishery for salmon or sea trout on the Gwyrfai

57 River Gwyrfai

58 River Llyfni 9 Salmon rod catch, River Llyfni Rod Killed Rod Released 12 Sea Trout rod catch, River Llyfni Rod Killed Rod Released There is no net fishery for salmon or sea trout on the Llyfni

59 River Llyfni

60 River Loughor 7 Lougor Salmon Rod Catch Rod Killed Rod Released 6 Loughor Sea Trout Rod Catch Rod Killed Rod Released There is no net fishery for salmon or sea trout on the Loughor

61 River Loughor

62 River Loughor Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) River Site Name Morlais - LO12 5 Year Average % Change from % Change from ( ) 215 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + > % % -1% -1% River Site Name Morlais - LO12 5 Year Average % Change from % Change from ( ) year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + > % 9% -69% -12%

63 River Mawddach Salmon rod catch, River Mawddach Sea Trout rod catch, River Mawddach Rod Killed Rod Released Rod Killed Rod Released 2 Salmon net catch, River Mawddach Sea Trout net catch, River Mawddach Seine Seine

64 River Mawddach

65 River Mawddach Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) 5 Year Average % Change from % Change from River ( ) year average Site Name Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Eden % -25% -73% -48% Wnion % -57% -87% -51% Average % -42% -8% -45% 5 Year Average % Change from % Change from River ( ) year average Site Name Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Eden % 16% -24% 211% Wnion % 96% -34% 28% Average % 25% -28% 68%

66 River Neath 12 Neath Salmon Rod Catch Rod Killed Rod Released Neath Sea Trout Rod Catch Rod Killed Rod Released There is no net fishery for salmon or sea trout on the Neath

67 River Neath

68 River Neath Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) River Site Name 5 Year Average % Change from % Change from ( ) year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Nant Clwyd - NE % -1% -1% -1% Sychryd - NE7i % % % % Average % -1% -1% -1% River Site Name 5 Year Average % Change from % Change from ( ) year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Nant Clwyd - NE % -4% -1% -8% Sychryd - NE7i % -78% 78% -87% Average % -26% 17% -39%

69 River Nevern Nevern Salmon Rod Catch Rod Killed Rod Released Nevern Sea Trout Rod Catch Rod Killed Rod Released There is no net fishery for salmon or sea trout on the Nevern

70 River Nevern

71 River Nevern Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) River Site Name 5 Year Average % Change from % Change from ( ) year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Bryn Berian - NV % + 35% -73% Nevern - NV % 1% -1% 13% Average % 112% -93% -4% River Site Name 5 Year Average % Change from % Change from ( ) year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Bryn Berian - NV % 93% -32% 97% Nevern - NV % 9% -42% 1% Average % 92% -37% 98%

72 River Ogmore Ogmore Salmon Rod Catch Rod Killed Rod Released Ogmore Sea Trout Rod Catch Rod Killed Rod Released There is no net fishery for salmon or sea trout on the Ogmore

73 River Ogmore

74 River Ogmore Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) River Site Name Year Average ( ) % Change from 215 % Change from 5 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Ogwr Fach - Og % -28% -95% -45% Ogwr Fawr - OG16A % -83% -55% -84% Average % -65% -73% -7% River Site Name Year Average ( ) % Change from 215 % Change from 5 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Ogwr Fach - Og % -27% -74% -36% Ogwr Fawr - OG16A % -7% -83% -28% Average % -21% -77% -33%

75 River Ogwen Salmon rod catch, River Ogwen Sea Trout rod catch, River Ogwen Rod Killed Rod Released Rod Killed Rod Released 35 Salmon net catch, River Ogwen Sea Trout net catch, River Ogwen Seine Seine

76 River Ogwen

77 River Ogwen Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) 5 Year Average % Change from % Change from River ( ) year average Site Name Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Ogwen % -17% -43% -43% 5 Year Average % Change from % Change from River ( ) year average Site Name Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Ogwen % -74% -31% -3%

78 River Rheidol Rheidol Salmon Rod Catch Rod Killed Rod Released Rheidol Sea Trout Rod Catch Rod Killed Rod Released There is no net fishery for salmon or sea trout on the Rheidol

79 River Rheidol

80 River Rheidol Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) River Site Name Melindwr - RH1A River Site Name Melindwr - RH1A 5 Year Average % Change from % Change from ( ) year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + > % % -1% % Year Average ( ) % Change from 215 % Change from 5 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + > % 14% -43% 15%

81 River Rhymney 12 Salmon rod catch River Rhymney Rod Killed Rod Released 6 Sea Trout rod catch River Rhymney Rod Killed Rod Released There is no net fishery for salmon or sea trout on the Rhymney

82 River Rhymney

83 River Rhymney Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) River Site Name Year Average ( ) % Change from 215 % Change from 5 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Rhymney - R1b % % 117% % Rhymney Bargoed - R % % % % Average % % 983% 4% River Site Name 5 Year Average % Change from % Change from ( ) year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Rhymney - R1b % 96% -17% 96% Rhymney Bargoed % 129% 27% 73% R5 Average % 121% -13% 16%

84 River Seiont 35 Salmon rod catch, River Seiont Sea Trout rod catch, River Seiont Rod Killed Rod Released Rod Killed Rod Released 6 Salmon net catch, River Seiont Sea Trout net catch, River Seiont Seine Seine

85 River Seiont

86 River Seiont Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) River - Site Nant Peris Year Average % Change from % Change from ( ) year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + > % 25% 11% -3% River - Site Nant Peris Year Average % Change from % Change from ( ) year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + > % + -12% -3%

87 River Severn 2 Salmon rod catch, River Severn Sea Trout rod catch, River Severn Rod Killed Rod Released Rod Killed Rod Released Salmon net catch, River Severn There is no net fishery for sea trout on the River Severn TOTAL (NETS & FIXED ENGINES)

88 River Severn

89 Juvenile salmon densities 211 to 216 (fish per 1m 2 ) River Severn Year Average ( ) % Change from 215 % Change from 5 year average River Site Name Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Banwy - Y Fron % 17% -8% 14% Bechan Brook - Aberbechan % -1% -31% -1% Cain - Green Hall % -52% -91% -57% Camlad - Forden Hospital % -6% 238% -38% Carno - Wig Bridge % 14% -84% -6% Clywedog - U/S Dieldre Conf % + -94% Dulas - Rank Cottage % 118% 1% 14% Gam - Cefnllys Uchaf % -7% -89% -7% Mule - Abermule % -17% Rhiew - New Mills % 23% -9% 54% Rhiew - RVLR % -35% -57% 61% Severn - Old Hall % -5% 55% -58% Tanat - Peddair Ffordd % 395% -75% 138% Tanat - U/S Llangynog STW % -1% -33% -1% Twrch - Dol y Gaseg % -25% -73% 31% Vyrnwy - Plas Dolanog Falls % -54% -83% -66% Average % -23% -55% 11%

90 Juvenile trout densities 211 to 216 (fish per 1m 2 ) River Severn Year Average ( ) % Change from 215 % Change from 5 year average River - Site Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Banwy - Y Fron % 5% -79% 138% Bechan Brook - Aberbechan % -86% -1% -84% Cain - Green Hall % -63% 3% -35% Camlad - Forden Hospital % 13% % 81% Carno - Wig Bridge % + -1% + Clywedog - U/S Dieldre Conf % -87% 7% -87% Dulas - Rank Cottage % 26% -1% -26% Gam - Cefnllys Uchaf % -44% -1% -48% Mule - Abermule % 213% Rhiew - New Mills % 775% -63% 56% Rhiew - RVLR % -72% 44% Severn - Old Hall % -73% -78% -66% Tanat - Peddair Ffordd % % -74% -1% Tanat - U/S Llangynog STW % 18% -42% -28% Twrch - Dol y Gaseg % -65% -3% -48% Vyrnwy - Plas Dolanog Falls % -71% -1% -55% Average % -15% -53% 3%

91 River Taf 3 Taf Salmon Rod Catch Rod Killed Rod Released 7 Taf Sea Trout Rod Catch Rod Killed Rod Released There is no net fishery for salmon or sea trout on the Taf

92 Density fish/1m Density fish/1m2 River Taf Taf Catchment Average Densities of Salmon Salmon >+ Salmon Taf Catchment Average Densities of Trout Trout >+ Trout

93 River Taf

94 River Taf

95 River Taf Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) 5 Year Average % Change from % Change from River Site ( ) year average Name Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Cynin - TA % -1% -1% -1% Cywyn - TA % 921% -1% 139% Taf - TA % 175% 28% -23% Tigen - TA34a % % -1% -1% Average % 292% -66% -3% 5 Year Average % Change from % Change from River Site ( ) year average Name Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Cynin - TA % -67% -86% -58% Cywyn - TA % 15% -93% 32% Taf - TA % 25% -37% 32% Tigen - TA34a % -9% -31% -85% Average % -19% -47% -4%

96 Rivers Taff and Ely 12 Salmon rod catch River Taff Rod Killed Rod Released 3 Sea trout rod catch River Taff Rod Killed Rod Released There is no salmon or sea trout net fishery on the Taff or Ely

97 Rivers Taff and Ely Fish trap data Since a fish trap has been operated at either Blackweir or Radyr on the River Taff. Variable trapping effort has been extrapolated to give an annual estimate of Taff salmon and sea trout adult numbers, shown in the graphs below. It is this data that is used for the Egg Deposition Target compliance assessment, rather than the rod catch. Due to the installation of a hydropower system on Radyr weir there was no fish trapping in 215 or Salmon run estimate Sea trout run estimate

98 Cardiff Barrage fish counter data Rivers Taff and Ely Salmon passage through the Cardiff Bay Barrage, into the rivers Taff and Ely, is monitored by two Vaki Riverwatcher fish counters. One counter is situated on the main pass, the other on the auxiliary pass. Both counters have been generating data since 28, although the counters were running at a lower efficiency for these first two years, and so only data from 21 onwards is shown below. The primary route into the bay is through the main pass. A programme of validation has been carried out on the main pass counter and an assessment of fish passage up the sides of the fishway gate carried out - it is possible for fish to traverse the sides of the fishway gate at certain states of tides and enter the bay without passing through the counter. The numbers of salmon entering Cardiff Bay are estimated by adding together the counts from both the main pass (adjusted for counter efficiency and proportion of fish traversing the fishway gate) and the auxiliary pass. Some passage may occur via other routes (e.g. locks and sluices) but this is not considered to be significant. The main Vaki was down for the majority 212 and as such is excluded from this data set. Year Total run estimate for salmon

99 Rivers Taff and Ely

100 Rivers Taff and Ely Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) Taff Ely River Site Name Year Average ( ) % Change from 215 % Change from 5 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Taf Fechan - T % % -1% -1% Taff Fawr - T Average % -1% -1% -1% Nant Mychydd % -2% -9% -34% E1 Taff Ely River Site Name Year Average ( ) % Change from 215 % Change from 5 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Taf Fechan - T % -58% -4% -51% Taff Fawr - T Average % -61% 25% -49% Nant Mychydd % 3% -64% 62% E1

101 River Tawe 25 Tawe Salmon Rod Catch Rod Killed Rod Released 12 Tawe Sea Trout Rod Catch Rod Killed Rod Released There is no net fishery for salmon or sea trout on the Tawe

102 River Tawe

103 River Tawe Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) River Site Name Year Average ( ) % Change from 215 % Change from 5 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Cwm du - TW % 15% 225% 18% Tawe - TW % % -88% 8% Average % 41% 12% 13% River Site Name Year Average ( ) % Change from 215 % Change from 5 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Cwm du - TW % % -44% -1% Tawe - TW % -28% -44% -28% Average % -28% -44% -46%

104 River Teifi Teifi Salmon Rod Catch Teifi Sea Trout Rod Catch Rod Killed Rod Released Rod Killed Rod Released Teifi Salmon Net Catch Teifi Sea Trout Net Catch Seine Coracle Seine Coracle

105 River Teifi A DIDSON imaging sonar has been annually deployed at Glanteifi to monitor and enumerate salmon migration since 29. The overall aims of the Glanteifi salmon monitoring site is to provide data that can be used to: 1. Investigate the relationships between adult salmon migration and environmental factors such as river flow; 2. Provide stock assessment data for fisheries management. Combining the early season run estimate (from rod exploitation) and the DIDSON derived run estimate for July to November gives a total estimate of the salmon run into the Teifi for each year (see table below). Some fish may enter between January and March and again in December but this is likely to be minimal. Both the annual run estimates and the rod catches have shown a continuous decline since the first year of deployment in 21. Both the rod catch and run estimate for 214 are approximately a third of the estimate for 21, with the run estimate decreasing from 6,56 to 1,91 and the rod catch decreasing from 113 to 331. As such the extant rod exploitation rate has remained relatively constant over the period, with a minimum estimate of 16.1% in 211 and maximum of 18.5% in 212. Annual run estimates of salmon and rod exploitation at Glanteifi between 21 and 215 Year Early Season Estimate 1 DIDSON Derived Run Estimate 2 Total Run Estimate 3 Annual Rod Catch 4 Extant Rod Exploitation (%) NB - numbers may be rounded up to give whole fish figures 1 Early season estimate is based on early season rod catch, includes July prior to Salmon run estimates differ from those previously reported due to new species apportionment approach. 3 No estimate is available for December to March. 4 Figures adjusted for 1.1 licence return rate 21 to 214, and 1.36 for figures are provisional

106 Density fish/1m Density fish/1m2 River Teifi Teifi Catchment Average Salmon Densities Salmon >+ Salmon Teifi Catchment Average Trout Densities Trout >+ Trout

107 River Teifi

108 River Teifi

109 River Teifi Juvenile salmon and trout densities 211 to 216 (fish per 1m 2 ) River Site Name Year Average ( ) % Change from 215 % Change from 5 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Brefi - TE % -3% -21% -16% Duar - TE % -62% -91% -49% Nant Bargoed - Te % -1% -1% -1% Ceri - TE % 67% -1% -5% Clywedog - TE25A % -38% -85% -58% Cych - TE % 51% -1% -86% Average % -31% -86% -33% 5 Year Average % Change % Change from River Site ( ) from 215 year average Name Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Brefi - TE % -28% -24% -14% Duar - TE % 6% -72% 55% Nant Bargoed % -21% -75% -27% Te12 Ceri - TE % 136% -71% 234% Clywedog - TE25A % 8% -65% -1% Cych - TE % 176% 9% -11% Average % 3% -33% 25%

110 River Twyi 2 Tywi Salmon Rod Catch Tywi Sea Trout Rod Catch Rod Killed Rod Released Rod Killed Rod Released Tywi Salmon Net Catch Tywi Sea Trout Net Catch Seine Seine

111 Density fish/1m Density fish/1m2 River Twyi Tywi Catchment Average Densities of Salmon Salmon >+ Salmon Tywi Catchment Average Densities of Trout Trout >+ Trout

112 River Twyi

113 River Twyi

114 River Twyi Juvenile salmon densities 211 to 216 (fish per 1m 2 ) River Site Name 5 Year Average % Change from % Change from ( ) year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Alltwalis - TY % -48% -65% -62% Gwili - TY5A % 459% -1% 69% Gorlech - TY % -32% -1% -54% Melindwr - TY % + -84% 32% Dulas - TY % -1% -1% -1% Cennen - TY % -1% -1% -1% Gwydderig - TY35B % 141% -1% 57% Gwenlais - TY % -21% -55% -45% Gwenffrwd - TY % -1% -95% -1% Nant Pibwr - TYM33i % -1% % -1% Doethie - TYM % -99% 5% -99% Pysgotwr Fawr - TYWFD % -1% -74% -1% Average % -11% -82% -49%

115 River Twyi Juvenile trout densities 211 to 216 (fish per 1m 2 ) 5 Year Average % Change from % Change from ( ) year average River - Site Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Alltwalis - TY % -83% -9% -77% Gwili - TY5A % 32% -98% -4% Gorlech - TY % 46% -92% -6% Melindwr - TY % 8% -77% -25% Dulas - TY % -85% -1% -92% Cennen - TY % % -91% -26% Gwydderig - TY35B % 2% -82% -65% Gwenlais - TY % 2% -43% 59% Gwenffrwd - TY % 68% -61% 21% Nant Pibwr - TYM33i % 111% -1% 22% Doethie - TYM % -1% -63% -1% Pysgotwr Fawr % -1% -91% -1% TYWFD3 Average % -1% -81% -16%

116 River Usk 15 Salmon rod catch, River Usk Sea Trout rod catch, River Usk Rod Killed Rod Released Rod Killed Rod Released Salmon net catch, River Usk Sea Trout net catch, River Usk Drift nets Putts / Putchers TOTAL (NETS & FIXED ENGINES)

117 Density fish/1m Density fish/1m2 River Usk Usk Catchment Average Densities of Salmon Salmon >+ Salmon Usk Catchment Average Densities of Trout Trout >+ Trout

118 River Usk

119 River Usk NB data shown here are from both the 216 salmonid temporal and eel index programmes

120 Juvenile salmon densities 211 to 216 (fish per 1m 2 ) River Site Name River Usk Year Average ( ) % Change from 215 % Change from 5 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Usk - U % -16% -1% -28% Hydfer % -13% -1% -15% U2 Crai - U % -2% -97% -26% Senni - U % -9% -99% -45% Cilieni - U % -37% -99% -2% Bran - U % 45% -1% 2% Ysgir - U % -72% -99% -67% Honddu - U9 Menasgin - U1 Rhiangoll - U11 Grwyne Fawr - U12 Grwyne Fechan - U % -54% -1% -7% % -53% -1% -81% % + -1% -77% % -61% -1% -72% % -83% -1% -79% Tarell - U % -65% -82% -75% Average % -49% -97% -52%

121 Juvenile trout densities 211 to 216 (fish per 1m 2 ) River Usk Year Average ( ) % Change from 215 % Change from 5 year average River - Site Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Usk - U % -29% -73% -6% Hydfer % -48% -5% -61% U2 Crai - U % + 58% Senni - U % -43% -17% -13% Cilieni - U % -23% -51% -22% Bran - U % -95% -78% -91% Ysgir - U % 3% -97% -9% Honddu - U9 Menasgin - U1 Rhiangoll - U11 Grwyne Fawr - U12 Grwyne Fechan - U % -77% -67% -51% % -57% -75% -31% % + -85% -55% % -15% -11% 46% % 23% -7% 32% Tarell - U % -13% -88% -12% Average % -37% -67% -22%

122 River Wye Salmon rod catch (owners returns) River Wye Sea Trout rod catch River Wye Rod Killed Rod Released Rod Killed Rod Released 2 Salmon net catch River Wye There is no sea trout net fishery on the Wye 5 TOTAL (NETS & FIXED ENGINES)

123 Density fish/1m Density fish/1m2 River Wye Wye Catchment Average Densities of Salmon Salmon >+ Salmon Wye Catchment Average Densities of Trout Trout >+ Trout

124 River Wye

125 River Wye

126 Juvenile salmon densities 211 to 216 (fish per 1m 2 ) River Site Name River Wye Yr Average ( ) % Change from 215 % Change from 5 yr Av. + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Dernol - W % -71% 19% -79% Marteg - W % % -58% -13% Llanwrthyl Dulas - W % -1% -56% -1% Ithon - W % + -58% -3% Clywedog - W % 68% -21% -4% South Dulas - Irfon - W % 118% -71% 59% Garth Dulas - W8a % -2% -51% -52% Chwerfri - W % -1% -74% -1% Duhonw - W % -7% 1% -12% Edw - W % -74% -59% -37% Sgithwen - W % -52% -87% -65% Lugg - W % % % % Hindwell Brook - W % % % % Honddu - W % % % % Wye - W % -26% -76% -33% Bidno - W % -43% -17% -31% Ithon - W32d % + 27% -48% Aran - W % + -94% -36% Nantmel Dulas - W35a % -75% -71% -76% Cammarch - W43a % 21% -44% 45% Einon - W44b % -1% -1% -1% Llynfi - W47e % % -1% % Arrow - W % % % -1% Irfon - W95L % -2% Average % -47% -58% -51% Note densities here are calculated from the first run only of the quantitative surveys in order that semi-quantitative surveys could also be included in the analysis. The densities are not directly comparable to the graphs above which use only fully quantitative surveys.

127 Juvenile trout densities 211 to 216 (fish per 1m 2 ) River Wye Yr Average ( ) % Change from 215 % Change from 5 yr Av River Site Name Trout Trout Trout Trout Trout Trout Trout Trout Trout + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ + >+ Dernol - W % -36% -29% -43% Marteg - W % 33% -37% 78% Llanwrthyl Dulas - W % -38% -16% -44% Ithon - W % % % % Clywedog - W % -1% % 1% South Dulas - Irfon - W % % -64% 1% Garth Dulas - W8a % -16% -85% 151% Chwerfri - W % -71% -61% -77% Duhonw - W % -26% 9% 56% Edw - W % -58% 25% -26% Sgithwen - W % 59% 79% -24% Lugg - W % 18% -1% 21% Hindwell Brook - W % 11% 69% 131% Honddu - W % 25% 17% 73% Wye - W % % 83% 1% Bidno - W % -1% -79% 1% Ithon - W32d % + -29% 1% Aran - W % + -17% 78% Nantmel Dulas - W35a % 2% -32% -19% Cammarch - W43a % 126% -18% 178% Einon - W44b % -45% 62% -47% Llynfi - W47e % -26% 13% 55% Arrow - W % 27% 27% -38% Irfon - W95L % 1% Average % -8% 2% 5% Note densities here are calculated from the first run only of the quantitative surveys in order that semi-quantitative surveys could also be included in the analysis. The densities are not directly comparable to the graphs above which use only fully quantitative surveys.

128 River Ystwyth 7 Ystwyth Salmon Rod Catch Rod Killed Rod Released Ystwyth Sea Trout Rod Catch Rod Killed Rod Released There is no salmon or sea trout net fishery on the Ystwyth

129 River Ystwyth