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Idaho Department of Fish and Game Volume 099 Article 04 IDAHO DEPARTMENT OF FISH AND GAME Jerry M. Conley, Director FEDERAL AID IN FISH RESTORATION 1992 Job Performance Report Project F-71-R-17 REGIONAL FISHERIES MANAGEMENT INVESTIGATIONS Job No. 4-a. Region 4 Mountain Lakes Investigations Job No. 4-b. Region 4 Lowland Lakes and Reservoirs Investigations Job No. 4-c. Region 4 Rivers and Streams Investigations Job No. 4-d. Region 4 Technical Guidance By Charles D. Warren, Regional Fisheries Biologist Fred E. Partridge, Regional Fisheries Manager December 1994 IDFG 94-36 TABLE OF CONTENTS Page Job No. 4-a. _Region 4 Mountain Lakes Investigations ABSTRACT ................................................................ 1 OBJECTIVE ............................................................... 2 METHODS ................................................................. 2 RESULTS ................................................................. 2 Baker Lake ......................................................... 2 Lake Cleveland ..................................................... 6 RECOMMENDATIONS ......................................................... 6 ACKNOWLEDGEMENTS ............. ......................................... 10 LIST OF TABLES Table 1. Length frequency of fish sampled in gill nets from Baker Lake on July 13-14, 1992 ....................................... 4 Table 2. Back-calculated length-at-age (mm) for cutthroat and brown trout sampled at Baker Lake, July 1992. (Standard deviation in parentheses) ...................................... 5 Table 3. Baker Lake stocking history from 1960-1992 .................... 7 LIST OF FIGURES Figure 1. Map depicting location of Baker Lake and bathometric profile ....................................................... 3 Figure 2. Map depicting location of Lake Cleveland and bathometric profile ....................................................... 8 Figure 3. Daytime temperature and dissolved oxygen profiles near the inlet and mid-reservoir at Lake Cleveland on July 30, 1992 .......................................................... 9 Job No. 4-b. _Region 4 Lowland Lakes and Reservoirs Investigations ABSTRACT ............................................................... 11 OBJECTIVE .............................................................. 12 CONTENTS i TABLE OF CONTENTS (Cont.) Page METHODS .................................................................12 RESULTS AND DISCUSSION ..................................................13 Anderson Ranch Reservoir ..........................................13 Blair Trail Reservoir .............................................13 Bruneau Duck Pond .................................................22 Dog Creek (Irving) Reservoir ......................................22 Emerald Lake ......................................................29 Little Wood Reservoir .............................................29 Magic Reservoir ...................................................33 Oakley Reservoir ..................................................38 Roseworth (Cedar Creek) Reservoir .................................38 Salmon Falls Creek Reservoir ......................................44 Sublett Reservoir .................................................44 Stone (Curlew) Reservoir ..........................................53 Regional Creel Surveys ............................................53 Catchable Trout Evaluations .......................................53 RECOMMENDATIONS .........................................................58 LITERATURE CITED ........................................................60 APPENDICES .................... .........................................61 LIST OF TABLES Table 1 Length frequency of fish sampled by gill nets in Anderson Ranch Reservoir on April 29, 1992 ............................15 Table 2 Length frequency of fish sampled by gill nets in Anderson Ranch Reservoir on August 28, 1992 ..........................16 Table 3. Number of kokanee observed at selected sites on the South Fork Boise River during spawning ground surveys in 1992 .....................................................18 Table 4 Length frequency of all hatchery rainbow trout and subsamples of brown bullhead and bluegill from Blair Trail Reservoir, utilizing one unit of effort in June 1992 ...................................................21 Table 5 Length frequency of black crappie and brown bullhead sampled at Bruneau Duck Pond in late June 1992 ...............24 Table 6. Back-calculated length-at-age (mm) of black crappie in Bruneau Duck Pond. (Standard deviation in parentheses.) ................................................24 Table 7. Length frequency of fish sampled by electrofishing in Dog Creek Reservoir in June and July 1992 ....................27 CONTENTS CONTENTS ii LIST OF TABLES (Cont.) Page Table 8. Back-calculated length-at-age (mm) for largemouth bass sampled at Dog Creek Reservoir, June and July 1992. (Standard deviation in parentheses.) .................. 28 Table 9. Dog Creek Reservoir largemouth bass and bluegill PSDs in 1989, 1990, and 1992, with relative stock densities (> 380 mm) for largemouth bass in 1990 and 1992 . 30 Table 10. Relative weights of largemouth bass in Dog Creek Reservoir on June 25, 1992 .................................. 30 Table 11. Little Wood Reservoir summary of estimated angler effort, catch rates, and harvest by 28-day intervals between June 1 and December 13, 1992 ................................ 32 Table 12. Magic Reservoir summary of estimated angler effort, catch rates, and harvest by 28-day intervals between June 1 and December 13, 1992 ................................ 35 Table 13. Length frequency of fish sampled by gill nets in Magic Reservoir on April 22, 1992 ........................... 36 Table 14. Brown trout redd counts on Big Wood River and Rock Creek above Magic Reservoir ....................................... 39 Table 15. Length frequency of fish sampled by beach seine in Oakley Reservoir on October 23, 1992 ........................ 39 Table 16. Fish sampling results from beach seining at Oakley Reservoir, 1989-1992 ........................................ 40 Table 17. Length frequency of fish sampled in Roseworth Reservoir in October 1992 ............................................. 42 Table 18. Back-calculated length-at-age (mm) for wild or hatchery rainbow trout planted as fingerlings sampled at Roseworth Reservoir, October 1992. (Standard deviation in parentheses.) ............................................ 43 Table 19. Length frequency of fish sampled by beach seine in Salmon Falls Creek Reservoir on October 20, 1992 . 47 Table 20. Fish sampled by beach seining at Salmon Falls Creek Reservoir, 1990-1992 ........................................ 49 Table 21. Length frequency of kokanee sampled by nighttime trawl on July 29, 1992 at Salmon Falls Creek Reservoir . 50 Table 22. Back-calculated length-at-age (mm) for wild rainbow trout at Sublett Reservoir, July 1992. (Standard deviation in parentheses.) .................................. 51 CONTENTS iii LIST OF TABLES (Cont.) Page Table 23. Results of creel checks performed at Region 4 waters on opening day (May 23) of the general fishing season, 1992 ........................................................55 Table 24. Results of spot creel checks performed at Region 4 waters during 1992, excluding opening day ...................56 Table 25. Number and success of fishing tournaments in Region 4, 1990-1992 ....................................................57 Table 26. Catchable trout jaw tag data for Region 4 waters during 1992 ........................................................59 LIST OF FIGURES Figure 1. Map of Anderson Ranch Reservoir with tributaries and location of South Fork Boise River mouth, July 3 and September 30, 1992 ......................................14 Figure 2. Length frequency of all adult kokanee gillnetted at Anderson Ranch Reservoir on August 28, 1992 .................17 Figure 3. South Fork Boise River 1989-1992 spawning kokanee trend counts ................................................19 Figure 4. Temperature and dissolved oxygen profiles for three sites on July 3, 1992 and for two sites on September 30, 1992 at Anderson Ranch Reservoir ............................20 Figure 5. Temperature and dissolved oxygen profiles for two sites on June 11, 1992 at Blair Trail Reservoir . 23 Figure 6. Temperature and dissolved oxygen profiles for Bruneau Duck Pond, June 23, 1992 ............................25 Figure 7. Length frequency distribution of largemouth bass, bluegill, hatchery rainbow trout, and yellow perch at Dog Creek Reservoir, June and July 1992 .....................26 Figure 8. Temperature and dissolved oxygen profiles for 8:00 PM of June 25, 1992 and 6:15 AM of July 16, 1992 at Dog Creek Reservoir .........................................31 Figure 9. Temperature and dissolved oxygen profiles for three sites on July 4, 1992 at Little Wood Reservoir . 34 Figure 10. Temperature and dissolved oxygen profiles for two sites on April 21, three sites on July 3, and one site on August 31, 1992 at Magic Reservoir .......................37 CONTENTS iv LIST OF FIGURES (Cont.) Page Figure 11. Temperature and dissolved oxygen profiles for July 27 and October 7, 1992 at Roseworth Reservoir ................. 41 Figure 12. Salmon Falls Creek Reservoir sampling sites and mouth of Salmon Falls Creek at minimum pool ...................... 45 Figure 13. Temperature and dissolved oxygen profiles for three sites on July
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