General Instream Flow Methods Overview. Agency Meeting on 2012 Draft Study Descriptions January 24, 2011

Transcription

1 General Instream Flow Methods Overview Agency Meeting on 2012 Draft Study Descriptions January 24,

2 Susitna River 2

3 Main Channel and Side Channels 3

4 Sloughs and Side Channels 4

5 Turbidity Portage Creek Whiskers Creek Slough 9 5

6 Upwelling, Incubation, & Juveniles 6

7 Spawning 7

8 Spawning 8

9 1980s Approach for Existing Habitat BL Devils Cyn 9

10 Project Water Diversion Impoundment Overview of Riverine Fish Habitat Land Cover Watershed Climate Precipitation Air Temperature Solar radiation/day length Geology Soil/rock types Topography Physical/ Chemical Habitat Hydrology Frequency Duration Timing Discharge Water Quality Temperature Turbidity DO Nutrients Salinity Pollutants Channel Geomorph. Channel shape Substrate Mesohabitat types Hydraulics Depth Velocity Water Surface Distance to waters edge Riparian Vegetation Types Regeneration Large woody debris Cover & distance to cover Groundwater Surface/groundwater interaction Algae and Macroinvertebrates Drift density/size (food) Fish individual / Population / Community Growth Immigration Tolerances Reproduction Emigration Distribution Abundance/Production Cohorts / Age Structure Diversity/Species Richness Predation Competition

11 11

12 12

13 13

14 14

15 15

16 Target Species, Lifestages and/or Guilds 16

17 Target Species, Lifestages and/or Guilds 17

18 Periodicity (seasonal timing) 18

19 1 Observed Habitat Utilization by Target Species/lifestages/guilds Relative Suitability Velocity (cm/s) S mm K mm S DNEI 30 mm K DNEI 30 mm Relative Suitability Relative Suitability Velocity (cm/s) S mm K mm S DNEI 50 mm K DNEI 50 mm Velocity (cm/s) S mm K mm S DNEI 150 mm K DNEI 150 mm Relative Suitability Velocity (cm/s) S mm K mm S DNEI 300 mm K DNEI 300 mm 19

20 Important Physical Habitat Processes 20

21 River Stratification and Study Sites Study Area Segmentation (Channel Shape, Slope, Hydrology, Access) 21

22 River Stratification and Study Sites 22

23 Habitat Suitability Criteria 23

24 Suitability Habitat Suitability Criteria Observed Redband Spawning Velocity Frequency (N=148) Bovee Raleigh Roaring UNFFR Butt NF Kings E Sierra UARP Sm-Med Project SI UARP Lrg Project SI Stanislaus Project SI CAWG Project SI PCWA Project SI Spokane River Mean Column Velocity (ft/s) 24

25 Habitat Suitability Criteria Observed Redband Spawning Depth Frequency (N=148) Suitability Depth (ft) Bovee Raleigh Roaring UNFFR Butt NF Kings E Sierra UARP All Channels Project SI Stanislaus Project SI CAWG Project SI PCWA Project SI Spokane River 25

26 Barriers and Water Temperature Chinook 2011 Measured Yuba Rives Habitat Modeling (Macro) 26

27 Habitat Modeling (Micro) 2-dimensional hydrodynamics and habitat modeling 1-dimensional hydraulics and habitat modeling Empirical mapping of habitat over a range of flows 27

28 Habitat Modeling (Versus Flow) 713 cfs 1342 cfs 2500 cfs 5226 cfs 28

29 Habitat Modeling (Versus Flow) 29

30 Habitat Modeling (2D) 30

31 Habitat Modeling (2D) 31

32 Habitat Modeling (Rip. Veg. and Substrate) 32

33 Habitat Modeling (1D) 33

34 Habitat Modeling (1D) 34

35 Habitat Modeling (Empirical Mapping and Spatial Niche) 35

36 Habitat Modeling (Empirical Mapping Patchy Habitat) 36

37 Habitat Modeling (Empirical Mapping Patchy Habitat) 37

38 Habitat Modeling (Empirical Mapping Patchy Habitat) 38

39 Spawning / Incubation Habitat vs Flow Relationships Varied Widely by Patch Examples Habitat at high flow -- little habitat at low flow Patch not inundated at low flow Habitat at low flow -- little habitat at higher flow Too high of velocity at high flow 39

40 Habitat Modeling (Empirical Mapping Patchy Habitat) Spawning Habitat X 10-3 (ft 2 / 1000 ft) Cumulative Redband Spawning & Effective Incubation Habitat (all patches) Discharge (cfs) Patch Study Results Effective Habit (13,000 cfs -> 1,000 cfs) Old 1D Cross Section cfs Spawn Discharge Total Spawning Habitat 40

41 Habitat Modeling (Empirical Mapping Patchy Habitat) Old 1D Cross-Section Study: Spawning Habitat Versus Flow Relationship Much Different Limited Sampling of Spawning Patches 41

42 Hydrology 42

43 Habitat Modeling (Time Series) 43

44 Habitat Modeling (Effective Habitat) Number of Redds Observed Apr 1-7 Apr 8-14 Apr Apr Apr 29 - May 5 May 6-12 May May May 27 - Jun 2 Number of Redds Observed Jun 3-9 Jun Jun Jun Jul 1-7 Jul 8-14 Jul Average Daily Discharge Average Daily Discharge (cfs) 44

45 Discharge (cfs) Habitat Modeling (Effective Habitat) Spokane River at Spokane, WA (USGS Gage No ) Feb Mar Apr May Jun Jul Aug Median 80 % Eceedance 20% Eceedance Incubation Spawning 45

46 Habitat Modeling (Effective Habitat) 46

47 Habitat Modeling (Effective Habitat) 47

48 Habitat Modeling 48

49 Habitat Modeling Many Other Aspects Including: Channel Change / Substrate Change/ Riparian Passage into Habitats Temperature Food Growth, etc. Winter Spring Summer/Fall Key Considerations Oct Nov Dec Jan Feb Mar Mar Apr May Jun Jun Jul Aug Sep Channel/Riparian Maintenance Flow Maintain Schedule Riparian Recruitment (seed setting) Enhance Rainbow Trout Habitat Spawn Incubation Enhance Enhance Adult Maintain Enhance Maintain Juvenile Other Fish Species (brown trout) Productivity (Algae,Benthos) Maintain Maintain Enhance Recreation (angling) Enhance Hydrograph (shape) Enhance Water Temperature Maintain Enhance 49