Oregon Chapter American Fisheries Society Nongame Native Fish Workshop Tiller, OR 9/13/16
UMPQUA OVERVIEW Drains 3.2 million acres & encompasses Douglas Co. Is 111 RM to the confluence North is 106 RM and South is 108 RM Has over 3,400 miles of fish bearing streams Over 51% of Douglas Co. is federally owned 88% of the land is forested
CO, STW, CHF Coho Winter Steelhead Summer Steelhead Spring Chinook Few Fall Chinook Coho Winter Steelhead Fall Chinook Few Spring Chinook
UMPQUA CHUB ODFW CRITICAL SENSITIVE SPECIES SIX FRAGMENTED POPULATIONS
Simon, D.C. 2007. Distributional surveys of Umpqua chub and smallmouth bass in the Cow Creek Basin and South Umpqua River, OR.
UMPQUA CHUB MARK/RECAPTURE Four recaptures traveled less than 100m 2008 2010 Site Number of Traps Set CPUE Total Hours of Trapping Effort Number of Traps Set CPUE Total Hours of Trapping Effort Elk Creek Calapooya Creek South Umpqua Cow Creek Smith River Olalla Creek 50 2.041 48 30 2.591 22 12 1.042 24 49 0.455 55 15 3.208 24 20 17.714 1.75 22 1.063 48 10 1.163 21.5 12 2.667 24 16 4.609 23 Total 111 168 125 123.25
UMPQUA PIKEMINNOW
NONGAME SPECIES AT WINCHESTER DAM DECREASING PIKEMINNOW NUMBERS LAMPREY RAMP
UMPQUA DACE LONGNOSE DACE SPECKLED DACE
Number of Fish 700 Umpqua Dace Umpqua Pikeminnow Umpqua Dace Umpqua Pikeminnow 600 500 400 300 200 100 0 March April May June Month March 31 20 April 83 616 May 155 487 June 29 3 UMPQUA SMOLT TRAP DATA BRUSH CREEK BIG TOM FOLLEY CREEK COW CREEK SMITH RIVER CALAPOOYA CREEK COPELAND CREEK CALF CREEK NORTH UMPQUA ELK CREEK HINKLE CREEK ROCK CREEK
HISTORY Illegally introduced in early 1970 s? First documented: 1976 South Umpqua/Cow Ck 1985: established in S.U. and lower Umpqua, occupied 208 miles of drainage, supported a fishery 1987 ODFW study verified distribution throughout Mainstem, South to above Tiller, and Cow Creek. 1991 & 1998 OSU study documented expanded distribution 1990 s: Extensive snorkeling didn t document in the Smith River, but there are many reported sightings by fishermen 1998: expanded to Calapooya Cr, Elk Creek, Lookingglass Creek, not found in Middle or WF Cow
MORE HISTORY 2007: 2 SMB over Winchester Dam Aug-Sept, occasionally observed in North 2011-12 ODFW repeated 1980 s distribution study, prelim results of 2011 bass/hour roughly the same: 43.8 (2011) vs 43 (1987) Spring E-boating difficult to accomplish Elk Creek diet/energetics study
Simon, D.C. 2007. Distributional surveys of Umpqua chub and smallmouth bass in the Cow Creek Basin and South Umpqua River, OR.
CREEL Year Bass/Hr Effort Source 1977 0.85 Umpqua River Smallmouth Bass Investigation 1990, ODFW 1988 0.96 Umpqua River Smallmouth Bass Investigation 1990, ODFW 1994 50 Kenny King, Guide 1988: Anglers on Ump and S.U. released high number (46%) of bass (dissatisfied with size, conservation of bass/improve angling) 1990: Exploitation rate (based on tagging study) 21% + 4.7% (in heavy use area) In general: majority of anglers don t harvest for consumption
DIET STUDIES Percent of Stomachs Containing Food Items Year (n)* Empty (%) Fish (%) Insects (%) Crayfish (%) Other (%) Time Period 1988 94 50 45 17 47 9 May-Sept 1992 372 17 25 43 45 4 May-Sept *predator size >7
SMB Diet Study 1999 Total Empty Fish Insects Crayfish Other Mainstem and S Umpqua n 191 51 55 75 51 3 % of Total 27 29 39 27 2 Range TL (in) 5-16" 5-14" 5-16" 5-16" 5-16" 6-7" Avg TL (in) 7.99" 7.84" 8.16" 8.01" 8.49" 6.33" Mainstem n 123 32 38 52 31 2 % of Total 26 31 42 25 2 Range TL (in) 5-14" 5-14" 5-13" 5-10" 5-13" 6-7" Avg TL (in) 7.92" 7.97" 7.82" 7.94" 8.42" 6.50" South Umpqua n 68 19 17 23 20 1 % of Total 28 25 34 29 1 Range TL (in) 5-16" 5-9" 6-16" 5-16" 6-16" 6" Avg TL (in) 8.11" 7.63" 8.94" 8.17" 8.60" 6" Mainstem Dates: June-29, July-14, Aug-12, and Sept-23 South Umpqua Sample Dates: July-28 and Aug-18 SMALLMOUTH BASS HOOK AND LINE DIET SAMPLING
SMALLMOUTH BASS HOOK AND LINE DIET SAMPLING
Number of Bass Observed per Diver-Hour 1987 2011 Bass per diver-hour Bass per diver-hour Stream Reach n 0-5" 5-10" 10+" TOTAL n 0-5" 5-10" 10+" TOTAL Change in number of SMB observed as a percentage of the 1987 number of total SMB per diver-hour Umpqua Below Scottsburg 19 0.0 2.6 1.5 4.1 Umpqua Scottsburg to Elkton 240 13.6 13.6 3.6 30.8 Umpqua Elkton to Kellogg 933 26.1 53.4 17.6 97.2 Umpqua Kellogg to Umpqua 617 16.1 28.1 7.3 51.4 253 8.1 31.0 9.6 48.7-5.4 Umpqua Umpqua to Forks 88 2.3 22.3 9.2 33.8 248 63.8 9.7 4.1 77.5 129.0 S Umpqua Mouth to Dillard 951 68.7 14.3 8.5 91.4 1674 119.6 28.5 6.9 155.0 69.5 S Umpqua Dillard to Myrtle Cr 506 27.9 44.4 4.4 76.7 261 7.6 14.9 5.5 28.1-63.4 S Umpqua Myrtle Cr to Canyonville 121 22.5 14.1 1.3 37.8 88 0.0 16.4 6.2 22.6-40.3 S Umpqua Canyonville to Tiller 140 5.2 18.8 1.1 25.0 10 0.0 1.7 0.4 2.1-91.7 S Umpqua Above Tiller 5 0.0 1.0 0.0 1.0 13 0.0 1.1 2.4 3.4 2.4 Cow Creek Cow Creek 405 18.5 9.3 1.5 29.3 142 2.6 5.5 5.1 13.1-55.2
SMALLMOUTH BASS SNORKEL DATA
1987: Snorkel study 25% of SMB pop >10 SIZE DISTRIBUTION OF BASS 1990: Tagging Study 41% of bass >10 1990: Anglers 53% of bass >10 Engbretson Underwater Photography
Size Composition of Bass Observed 1987 2011 % by size group % by size group Stream Reach n 0-5" 5-10" 10+" n 0-5" 5-10" 10+" Umpqua Below Scottsburg 19 0% 63% 37% Umpqua Scottsburg to Elkton 240 44% 44% 12% Umpqua Elkton to Kellogg 933 27% 55% 18% Umpqua Kellogg to Umpqua 617 31% 55% 14% 253 17% 64% 20% Umpqua Umpqua to Forks 88 7% 66% 27% 248 82% 13% 5% S Umpqua Mouth to Dillard 951 75% 16% 9% 1674 77% 18% 4% S Umpqua Dillard to Myrtle Cr 506 36% 58% 6% 261 27% 53% 20% S Umpqua Myrtle Cr to Canyonville 121 60% 37% 3% 88 0% 73% 27% S Umpqua Canyonville to Tiller 140 21% 75% 4% 10 0% 80% 20% S Umpqua Above Tiller 5 0% 100% 0% 13 0% 31% 69% Cow Creek Cow Creek 405 63% 32% 5% 142 20% 42% 39%
SMB Size Groups Stream Site Description Date 0-5" 5-10" 10+" Total SMB Non-game Species Present Cow Cr Pool under bridge at mouth of West Fork 8/1/2011 0 0 0 0 UC North Umpqua Brown bridge 8/24/2012 30 0 0 30 LSS, RSS, UPM, COTT North Umpqua Base of Winchester Dam 8/29/2012 0 0 0 0 COTT, DACE, UPM, RSS, LSS North Umpqua North Umpqua at mouth of Huntley Cr 8/24/2012 0 0 0 0 LSS, RSS, DACE North Umpqua Sutherlin Creek 8/24/2012 2 0 0 2 RSS, DACE, UPM, LSS S Umpqua Singleton Park 7/28/2011 32 144 44 220 RSS, LSS, UC S Umpqua Behind Roseburg High School under I-5 bridge 7/28/2011 953 105 27 1085 UC S Umpqua Happy Valley bridge (Winston) 7/28/2011 307 59 3 369 UC (large and small), RSS S Umpqua Stanton Park (Canyonville) 7/27/2011 0 17 7 24 UC S Umpqua 3-C Rock boat ramp (park) 7/26/2011 0 0 0 0 UC Smith River 100 yds downstream of log dump 8/9/2012 0 0 0 0 UPM, RSS, LSS Smith River Smith River Marina 8/9/2012 3 0 0 3 UPM, RSS, LSS, COTT Smith River Smith River Falls 8/10/2012 0 0 0 0 UPM, RSS, LSS, COTT, DACE Smith River Fawn Cr rec area to Doe Cr bridge 8/10/2012 0 0 0 0 UPM, RSS, LSS, COTT Smith River Pools above and below Vincent Cr bridge 8/10/2012 0 0 0 0 DACE, RSS, COTT Smith River Spencer Cr to 0.6 mi downstream 8/9/2012 0 0 0 0 COTT, DACE Umpqua Umpqua Landing boat ramp 8/2/2011 204 31 13 248 UC, RSS, AMMOC Umpqua Umpqua shad hole (river meets road) 8/28/2012 24 9 18 51 LSS, RSS, DACE, AMMOC Umpqua Scotts Cr Boat ramp 8/29/2012 164 177 33 374 LSS, RSS, UPM, COTT