SUMMARY OF MOVEMENT AND HABITAT USED BY TAGGED BROOK TROUT IN THE MAIN BRANCH AND NORTH BRANCH AU SABLE RIVER DURING SUMMER Data Submitted to:

Transcription

1 SUMMARY OF MOVEMENT AND HABITAT USED BY TAGGED BROOK TROUT IN THE MAIN BRANCH AND NORTH BRANCH AU SABLE RIVER DURING SUMMER 2014 Data Submitted to: Anglers of the Au Sable Submitted by: Dr. Mark R. Luttenton Annis Water Resources Institute and Biology Department Grand Valley State University Allendale, MI

2 Efforts to understand and improve the quality of the Au Sable River have been ongoing since the 1930 s. In spite of this effort, it appears that brook trout, a native stream salmonid in Michigan, have been declining. Previous studies have evaluated brook trout populations relative to numerous ecological variables and have noted that the amount of large woody structure present in the Au Sable is positively correlated with brook trout abundance (Zorn and Nuhfer 2007). However, our understanding of how brook trout respond to habitat and/or habitat improvement is incomplete. During summer 2013, the Mason-Griffith Founders Chapter of Trout Unlimited conducted work projects to install wood structures in the Au Sable River above Grayling. Historically, woody structure in that region has been relatively limited. Similar habitat projects were planned for the North Branch Au Sable River by the Anglers of the Au Sable. In this project we identify the structures (natural or constructed) used by brook trout and quantify features of the structures that brook trout occupy. To do this, we used telemetry to collect data on the daily and seasonal movements of brook trout, their habitat preference, and their response to warm summer temperatures. This project will be used to inform future habitat improvement projects. The proposed project will include: 1. Tracking 20 brook trout simultaneously, 2. Tracking fish in the North Branch and mainstream of the Au Sable River system simultaneously, 3. Tracking most tagged fish throughout the summer and fall, 4. Quantifying the physical complexity of home-sites, 5. Quantifying the physical nature of nighttime locations and 6. Quantifying brook trout movement during warm weather The proposed project would complement a current brown trout telemetry study. During summer and fall 2014, we tracked a combined 17 brook trout in the Main Branch and North Branch Au Sable River. B. Objectives: The objective is to better understand brook trout habitat use in the Au Sable River; information which will form the basis of future habitat improvement projects and provides insight into the potential brook trout response to warming temperatures. Specifically, the goals of this project will be: 1) track the movements of brook trout in the Au Sable River system for approximately 7 months, 2) identify specific locations and habitats utilized by brook trout, 3) quantify the physical structure of habitat associated with brook trout home sites and movements, 4) quantify the physical nature of nighttime locations and 5) identify spawning sites utilized by tagged fish. 2

3 C. Results and Summary: 1. Tracking We were able to track 16 fish during the course of the study. We tagged a total of 20 fish, but 4 fish were not included in the results because the fish and tag were lost before a sufficient number of tracks were completed. Brook trout movement appears to be relatively limited. Average total distance moved by brook trout in the Main Branch Au Sable River was meters (792.9 feet). Brook trout tracked in the North Branch averaged meters ( feet). This includes movement during the fall spawning period. Although brook trout generally left day time sites during evening hours, they did not exhibit a regular movement pattern. Unlike brown trout, brook trout did not consistently move to a night time location, but tended to move to different locations. In addition, brook trout appeared to move more at night. 2. Identify Specific Habitat and Locations Brook trout averaged 1.7 day sites during the study. This suggests that most brook trout moved to a new day time site at least once during the study. Thus, brook trout exhibit less home site fidelity than brown trout. Brook trout did not regularly establish a night time feeding site. 3. Quantify the Physical Structure of Habitat Associated with Brook Trout Home Sites and Movements - Brook trout day time home sites were relatively shallow, but did provide relief from stream flow by reducing flow velocity (Table 1). However, day sites were moderately complex and generally located close to the bank (Table 2). Home sites close to shore may have been a response to groundwater discharge. Habitat size averaged 8.8 meters (29.0 feet) long and 4.5 meters (14.8 feet) wide. Overhead structure provided approximately 50% cover. 4. Quantify the Physical Nature of Nighttime Locations Brook trout were tracked to a variety of locations during the study. Locations included slightly deeper pools to shallow sandy runs with no cover. 5. Identify Spawning Sites Utilized by Tagged Fish Spawning movement appeared to occur during October. I have included detailed maps for each fish showing fish locations. Dates are included for reference; October dates typically indicate approximate spawning locations. D. Habitat Analysis The following tables provide physical measurements of habitats utilized by brook trout during summer The tables are generally arranged from upstream to downstream for both the Main Branch and North Branch Au Sable River. Information includes, stream branch, specific location (e.g., Batterson), a general habitat description, and measurements taken at the location. The following illustration shows the general protocol used for habitat assessment and the locations of measurements relative to each fish home site. 3

4 Current Intervals 1-5 Upstream Middle Downstream Sites at edge of habitat are indicated with an + in each table. Sites within habitat are indicated with an * in each table. 4

5 Table 1. Average Depth, Flow, and Difference in Inside and Outside Homesites. Avg Depth (cm) Avg (m/s) Avg Difference (m/s) Average Min Max

6 6

7 Table 2. Average Physical Conditions Associated with Brook Trout Homesites. Stream Width (meters) Stream Width (feet) Habitat Width (meters) Habitat Width (feet) Habitat Length (meters) Habitat Length (feet) Distance to shore (meters) Distance to shore (feet) #sunken logs Complexity (1-5) GR1-45* BB BB LL LL KS LL LL GR GR DF DF DNR- 33/34/ PL PL TB TB2-37/ Average Min Max The first column includes site and structure number, and fish ID#. GR = Guide Rest; BB = Batterson Bridge; LL = Louies Landing; KS = Keystone; DF = Dam Four; DNR = DNR site; PL = Power line; TB = Twin Bridges. Thus GR1 represents structure # 1 at Guides Rest which was used by fish #45. Overhead 7

8 Branch: main Location: Fish ID#: 49 Upstream Upstream Interval Depth (cm) (m/s) batterson 1 deep run/root wad/undercut Middle Depth (cm) Middle (m/s) Downstream Depth (cm) Downstream (m/s) * Stream Width Habitat Width Habitat Length (cm) Distance to shore #sunken logs Complexity (1-5) Overhead meters % feet Substrate % Stream Summary Homesite Summary Silt 0.3 Avg Depth cm Avg Depth cm Sand 0.7 Min Depth 36 cm Avg m/s Gravel Max Depth 79 cm Cobble Avg m/s Avg velocity dif m/s Min m/s Max m/s 8

9 Branch: Main Location: Fish ID#: 46 Upstream Upstream Interval Depth (cm) (m/s) Batterson 2 island structure Middle Depth (cm) Middle (m/s) Downstream Depth (cm) Downstream (m/s) * Stream Width Habitat Width Habitat Length Distance to shore #sunken logs Complexity (1-5) Overhead meters feet Substrate % Stream Summary Homesite Summary Silt Avg Depth cm Avg Depth cm Sand 0.8 Min Depth 17 cm Avg m/s Gravel 0.2 Max Depth 47 cm Cobble Avg m/s Avg velocity dif m/s Min m/s Max m/s 9

10 Branch: Main Location: Louies Landing 1 South bank LWD/sunken raft Fish ID#: 42 Interval Upstream Upstream Middle Middle Downstream Downstream Depth Depth Depth (cm) (cm) (m/s) (cm) (m/s) (m/s) * Stream Width Habitat Width Habitat Length Distance to shore 10 #sunken logs Complexity (1-5) Overhead meters feet Substrate % Stream Summary Homesite Summary Silt Avg Depth cm Avg Depth cm Sand 0.4 Min Depth 48 cm Avg m/s Gravel 0.6 Max Depth 78 cm Cobble Avg m/s Avg velocity dif m/s Min m/s Max m/s

11 Branch: Main Location: Louies Landing 2 N bank pool with weedy vegetation Fish ID#: 42 Interval Upstream Upstream Middle Middle Downstream Downstream Depth Depth Depth (cm) (cm) (m/s) (cm) (m/s) (m/s) * Stream Width Habitat Width Habitat Length Distance to shore #sunken logs Complexity (1-5) Overhead meters feet Substrate % Stream Summary Homesite Summary Silt Avg Depth cm Avg Depth cm Sand 0.2 Min Depth 21 cm Avg m/s Gravel 0.2 Max Depth 88 cm Cobble Avg m/s Avg velocity dif m/s Vegetation 0.6 Min m/s Max m/s 11

12 Branch: Main Location: Louies landing 3 sunken raft Fish ID#: 43 Interval Upstream Upstream Middle Middle Downstream Depth Depth Depth (cm) (cm) (m/s) (cm) (m/s) Downstream (m/s) * Stream Width Habitat Width Habitat Length Distance to shore #sunken logs Complexity (1-5) Overhead meter feet Substrate % Stream Summary Homesite Summary Silt Avg Depth cm Avg Depth cm Sand Min Depth 27 cm Avg m/s Gravel Max Depth 70 cm Cobble Avg m/s Avg velocity dif m/s Min m/s Max m/s 12

13 Branch: Main Location: Louies Landing 4 undercut Fish ID#: 43 Interval Upstream Upstream Middle Middle Downstream Depth Depth Depth (cm) (cm) (m/s) (cm) (m/s) Downstream (m/s) * Stream Width Habitat Width Habitat Length Distance to shore #sunken logs Complexity (1-5) Overhead meters feet Substrate % Stream Summary Homesite Summary Silt Avg Depth cm Avg Depth cm Sand Min Depth 29 cm Avg m/s Gravel Max Depth 70 cm Cobble Avg m/s Avg velocity dif m/s Min m/s Max m/s 13

14 Branch: Main Location: keystone deep slot/overhanging trees Fish ID#: 40 Interval Upstream Upstream Middle Middle Downstream Downstream Depth Depth Depth (cm) (cm) (m/s) (cm) (m/s) (m/s) * Stream Width Habitat Width Habitat Length Distance to shore #sunken logs Complexity (1-5) Overhead meters feet Substrate % Stream Summary Homesite Summary Silt Avg Depth cm Avg Depth cm Sand 0.1 Min Depth 33 cm Avg m/s Gravel 0.9 Max Depth 75 cm Cobble Avg m/s Avg velocity dif m/s Min m/s Max m/s 14

15 Branch: Main Location: Guides Rest 1 - Sunken Raft Fish ID#: 45 Interval Upstream Upstream Middle Middle Downstream Depth Depth Depth (cm) (cm) (m/s) (cm) (m/s) Downstream (m/s) * Stream Width Habitat Width Habitat Length Distance to shore #sunken logs Complexity (1-5) Overhead meters feet Substrate % Stream Summary Homesite Summary Silt Avg Depth cm Avg Depth cm Sand 0.3 Min Depth 32 cm Avg m/s Gravel 0.7 Max Depth 58 cm Cobble Avg m/s Avg velocity dif m/s Min m/s Max m/s 15

16 Branch: main Location: Guides Rest 2 Upstream Fish ID#: 44 Interval Upstream Upstream Middle Middle Downstream Depth Depth Depth (cm) (cm) (m/s) (cm) (m/s) Downstream (m/s) * Stream Width Habitat Width Habitat Length Distance to shore #sunken logs Complexity (1-5) Overhead meters feet Substrate % Stream Summary Homesite Summary Silt Avg Depth cm Avg Depth cm Sand 0.5 Min Depth 26 cm Avg m/s Gravel 0.5 Max Depth 56 cm Cobble Avg m/s Avg velocity dif m/s Min m/s Max m/s 16

17 Branch: Main Location: Guides rest 3 downstream island structure Fish ID#: 45 Interval Upstream Upstream Middle Middle Downstream Downstream Depth Depth Depth (cm) (cm) (m/s) (cm) (m/s) (m/s) * Stream Width Habitat Width Habitat Length Distance to shore #sunken logs Complexity (1-5) Overhead meters feet Substrate % Stream Summary Homesite Summary Silt Avg Depth cm Avg Depth cm Sand Min Depth 39 cm Avg m/s Gravel Max Depth 62 cm Cobble Avg m/s Avg velocity dif m/s Min m/s Max m/s 17

18 Branch: North Location: Twin Bridges 1- dock structure Fish ID#: 38 West side of river area above and below dock with cobble piles and a few small logs Upstream Upstream Middle Middle Downstream Downstream Interval Depth Depth Depth (cm) (cm) (m/s) (cm) (m/s) (m/s) West* East Stream Width Habitat Width Habitat Length Distance to shore #sunken logs Complexity (1-5) Overhead meters feet Substrate % Stream Summary Homesite Summary Silt Avg Depth cm Avg Depth cm Sand 0.2 Min Depth 31 cm Avg m/s Gravel 0.5 Max Depth 48 cm Cobble 0.3 Avg m/s Avg velocity dif m/s Min m/s Max m/s 18

19 Branch: North Location: Twin Bridges 2 submerged raft Fish ID#: 37/38 Interval Upstream Upstream Middle Middle Downstream Downstream Depth Depth Depth (cm) (cm) (m/s) (cm) (m/s) (m/s) West East Stream Width Habitat Width Habitat Length Distance to shore #sunken logs Complexity (1-5) Overhead meters feet Substrate % Stream Summary Homesite Summary Silt Avg Depth cm Avg Depth cm Sand 0.4 Min Depth 40 cm Avg m/s Gravel 0.45 Max Depth 79 cm Cobble 0.15 Avg m/s Avg velocity dif Min m/s Max m/s 19

20 Branch: North Location: Powerline 1 - hook a brook lodge Fish ID#: 32 undercut bank with small overhanging tree and some LWD Interval Upstream Upstream Middle Middle Downstream Downstream Depth Depth Depth (cm) (cm) (m/s) (cm) (m/s) (m/s) West* East Stream Width Habitat Width Habitat Length Distance to shore #sunken logs Complexity (1-5) Overhead meters feet Substrate % Stream Summary Homesite Summary Silt Avg Depth cm Avg Depth cm Sand 0.15 Min Depth 22 cm Avg m/s Gravel 0.85 Max Depth 38 cm Cobble Avg m/s Avg velocity dif m/s Min m/s Max m/s 20

21 Branch: North Location: Powerline 2 downstream Fish ID#: 34 Submerged logs and gravel depression underneath overhanging shrubbery Interval Upstream Upstream Middle Middle Downstream Downstream Depth Depth Depth (cm) (cm) (m/s) (cm) (m/s) (m/s) West* East Stream Width Habitat Width Habitat Length Distance to shore #sunken logs Complexity (1-5) Overhead meters feet Substrate % Stream Summary Homesite Summary Silt Avg Depth cm Avg Depth cm Sand 0.5 Min Depth 14 cm Avg m/s Gravel 0.95 Max Depth 47 cm Cobble Avg m/s Avg velocity dif m/s Min m/s Max m/s 21

22 Branch: North Location: DNR submerged structure along west bank Fish ID#: 33/34/35 Interval Upstream Upstream Middle Middle Downstream Downstream Depth Depth Depth (cm) (cm) (m/s) (cm) (m/s) (m/s) West* East Stream Width Habitat Width Habitat Length Distance to shore #sunken logs Complexity (1-5) Overhead meters feet Substrate % Stream Summary Homesite Summary Silt Avg Depth cm Avg Depth cm Sand 0.7 Min Depth 21 cm Avg m/s Gravel 0.3 Max Depth 45 cm Cobble Avg m/s Avg velocity dif m/s Min m/s Max m/s 22

23 Branch: North Location: Fish ID#: 31 Upstream Upstream Interval Depth (cm) (m/s) Dam Four 1 undercut riffle/bank/eddy/tag Middle Depth (cm) Middle (m/s) Downstream Depth (cm) Downstream (m/s) * Stream Width Habitat Width Habitat Length Distance to shore #sunken logs Complexity (1-5) Overhead meters feet Substrate % Stream Summary Homesite Summary Silt Avg Depth cm Avg Depth cm Sand 0.3 Min Depth 14 cm Avg m/s Gravel 0.2 Max Depth 71 cm Cobble 0.5 Avg m/s Avg velocity dif m/s Min m/s Max m/s 23

24 Branch: North Location: Fish ID#: 31 Upstream Upstream Interval Depth (cm) (m/s) Dam Four 2 East Side log jam after convergence of two channels Middle Depth (cm) Middle (m/s) Downstream Depth (cm) Downstream (m/s) west east Stream Width Habitat Width Habitat Length Distance to shore #sunken logs Complexity (1-5) Overhead meters feet Substrate % Stream Summary Homesite Summary Silt Avg Depth cm Avg Depth cm Sand 0.2 Min Depth 26 cm Avg m/s Gravel 0.8 Max Depth 103 cm Cobble Avg m/s Avg velocity dif Min m/s Max m/s 24

25 Main Branch Au Sable River Brook Trout Locations Note: Due to the level of resolution available with handheld GPS units, some locations are positioned on the imagery background a few feet from their true locations. Red markers in the homesite images indicate the specific structure identified by the description; yellow circles delineate the locations used to determine a homesite. Average length-at-capture: mm Maximum length-at-capture: *297 mm Minimum length-at-capture: 199 mm Average weight-at-capture: grams Maximum weight-at-capture: *280 grams Minimum weight-at-capture: 50 grams Distance along the thalweg between furthest upstream and downstream location for each fish was calculated using the measuring tool in GIS Average: meters Maximum: meters Minimum: meters * Fish was lost after tagging 25

26 Fish #40 Keystone Landing Date of capture: 6/19/14 Length-at-capture: 228 mm Weight-at-capture: 115 grams Upstream/Downstream Distance: meters All locations All day locations (highlighted) 26

27 All night locations (highlighted) All locations with dates 27

28 Homesites X = overhanging tree below slide upstream of keystone, + = fallen tree upstream of keystone 28

29 Fish #42 Keystone Landing, Louies Landing Date of capture: 6/19/14 Length-at-capture: 279 mm Weight-at-capture: 255 grams Upstream/Downstream Distance: meters All locations All day locations (highlighted) 29

30 All night locations (highlighted) All locations with dates 30

31 Homesites downstream of Louies Landing X = submerged structure north side, + = overhanging cedar south side All 24 hour track locations (highlighted) 31

32 Fish #43 Louies Landing Date of capture: 6/20/14 Length-at-capture: 261mm Weight-at-capture: 261 grams Upstream/Downstream Distance: meters All locations All day locations (highlighted) 32

33 All night locations (highlighted) All locations with dates 33

34 Homesites X = undercut/overhanging tree, + = sunken raft/lwd All 24 hour track locations (highlighted) 34

35 Fish #44 Guides Rest Date of capture: 6/21/14 Length-at-capture: 247 mm Weight-at-capture: 180 grams Upstream/Downstream Distance: meters All locations Day locations (highlighted) 35

36 Night locations (highlighted) All locations with dates 36

37 Homesite X = 2 nd LWD upstream of guides rest All 24 hour locations (highlighted) 37

38 Fish #45 Guides Rest Date of capture: 6/21/14 Length-at-capture: 233 mm Weight-at-capture: 130 grams Upstream/Downstream Distance: meters All locations All day locations (highlighted) 38

39 All night locations (highlighted) All locations with dates 39

40 Homesites X = undercut/island downstream of guides rest, + = submerged log S side across from Guides Rest All 24 hour track locations (highlighted) 40

41 Fish #46 Batterson Bridge Date of capture: 7/9/14 Length-at-capture: 245 mm Weight-at-capture: 175 grams Upstream/Downstream Distance: meters All locations 41

42 All day locations (highlighted) 42

43 All night locations (highlighted) 43

44 All locations with dates 44

45 Homesites - * = overhanging tags/submerged LWD upstream of burnt house, + = Island structure with grass on top above burnt house, X = LWD on W side of river 45

46 All 24 hour track locations (highlighted) 46

47 Fish #47 Batterson Bridge Date of capture: 7/9/14 Length-at-capture: 234 mm Weight-at-capture: 145 grams Upstream/Downstream Distance: meters All locations 47

48 All day locations (highlighted) 48

49 All night locations (highlighted) 49

50 All locations with dates 50

51 Homesites X = sweeper below first dock, + = tags on E side of river, * = tags on E side of river 51

52 All 24 hour track locations (highlighted) 52

53 Fish #48 Batterson Bridge Date of capture: 7/9/14 Length-at-capture: 203 mm Weight-at-capture: 50 grams Upstream/Downstream Distance: meters All locations. Arrows identify most upstream and downstream locations. 53

54 All day locations (highlighted) 54

55 All night locations (highlighted) 55

56 All locations with dates 56

57 Homesites - += below burnt house, X = sweeper below burnt house 57

58 Fish #49 Batterson Bridge Date of capture: 7/9/14 Length-at-capture: 199 mm Weight-at-capture: 50 grams Upstream/Downstream Distance: meters All locations 58

59 All day locations (highlighted) All night locations (highlighted) 59

60 All locations with dates Homesites X = deep run, + = rootmass/fallen tree above deep run 60

61 All 24 hour track locations (highlighted) 61

62 North Branch Au Sable River Brook Trout Locations Note: Due to the level of resolution available with handheld GPS units, some locations are positioned on the imagery background a few feet from their true locations. Red markers in the homesite images indicate the specific structure identified by the description; yellow circles delineate the locations used to determine a homesite. Average length-at-capture: mm Maximum length-at-capture: 310 mm Minimum length-at-capture: 208 mm Average weight-at-capture: 192 grams Maximum weight-at-capture: 365 grams Minimum weight-at-capture: 100 grams Distance along the thalweg between furthest upstream and downstream location for each fish was calculated using a measuring tool in GIS Average: meters Maximum: meters Minimum: meters 62

63 Fish #31 Dam Four Date of capture: 6/24/14 Length-at-capture: 223 mm Weight-at-capture: 130 grams Upstream/Downstream Distance: meters All locations 63

64 Day locations (highlighted) 64

65 All night locations (highlighted) 65

66 All locations with dates 66

67 Zoom of locations with dates 67

68 Home sites (5+ tracks) 68

69 Fish #32 Upstream from NDNR/Powerlines Date of capture: 6/25/14 Length-at-capture: 208 mm Weight-at-capture: 100 grams Upstream/Downstream Distance: meters All Locations 69

70 All day locations (highlighted) 70

71 All night locations (highlighted) 71

72 Locations with dates 72

73 Homesites X = underneath willow, + = Single log in front of Hook-a-brook lodge 73

74 Fish #33 North DNR/ Copper Fisherman Date of capture: 6/25/14 Length-at-capture: 244 mm Weight-at-capture: 160 grams Upstream/Downstream Distance: meters All Locations 74

75 All day locations (highlighted) All night locations (highlighted) 75

76 Locations with dates 76

77 Zoom of locations with dates 77

78 Homesites X = submerged logs, + = island structure 24 Hour track locations (highlighted) 78

79 Fish #34 North DNR/ Copper Fisherman Powerlines Date of capture: 6/25/14 Length-at-capture: 310 mm Weight-at-capture: 365 grams Upstream/Downstream Distance: meters All Locations 79

80 Day locations (highlighted) upstream of copper fisherman 80

81 Day locations (highlighted) downstream of powerlines 81

82 Night locations (highlighted) upstream of copper fisherman Night locations (highlighted) downstream of powerlines 82

83 All locations with dates 83

84 Zoom of locations with dates downstream of powerlines 84

85 Homesite Submerged logs upstream of copper fisherman 85

86 Homesite downstream of powerlines 86

87 Fish #35 NDNR/Copper Fisherman, Lovells Tavern Date of capture: 6/25/14 Length-at-capture: 239 mm Weight-at-capture: 170 grams Upstream/Downstream Distance: meters All locations. Red arrow indicates farthest downstream location. 87

88 Day locations (highlighted) All night locations (highlighted) 88

89 Locations with dates Zoom of locations upstream of Lovells Tavern with dates 89

90 Homesite Submerged logs upstream of copper fisherman 24 Hour track locations (highlighted) 90

91 Fish #37 Upstream of Twin Bridges Date of capture: 6/26/14 Length-at-capture: 309 mm Weight-at-capture: 320 grams Upstream/Downstream Distance: meters All locations. Red arrow indicates farthest upstream location. 91

92 All day locations (highlighted) All night locations (highlighted) 92

93 All locations with dates Homesite submerged raft upstream of Twin Bridges 93

94 24 Hour track locations (highlighted) 94

95 Fish #38 Upstream of Twin Bridges Date of capture: 6/26/14 Length-at-capture: 214 mm Weight-at-capture: 100 grams Upstream/Downstream Distance: meters All locations All day locations (highlighted) 95

96 All night locations (highlighted) All locations with dates 96

97 Homesites X = Submerged raft upstream of Twin Bridges, + = first dock W side upstream of Twin Bridges 24 hour track locations (highlighted) 97

98 Fish #39 Upstream of Twin Bridges Date of capture: 6/26/14 Length-at-capture: 240 mm Weight-at-capture: 160 grams Upstream/Downstream Distance: meters All locations All day locations (highlighted points) 98

99 All night locations (highlighted points) Locations with dates 99

100 24 Hour track locations (highlighted) 100

101 101

102 Air temperature recorded at Gate s Lodge. 102

103 Water temperature recorded at Guide s Rest. 103

104 Water temperature recorded at Gates Lodge. 104

105 Water temperature recorded at Shaw Park. 105

106 Water temperature recorded at Wakeley Bridge. 106

107 Water temperature recorded at Twin Bridge. 107

108 Water temperature recorded at Townline. 108

109 Water temperature recorded at DNR Access. 109

110 Water temperature recorded at Dam

111 Water temperature recorded at Sheep Pasture. 111

112 Water temperature recorded at Kellogg Bridge. 112