Figure 1. Map of Platte River Watershed.

Transcription

1 Figure 1. Map of Platte River Watershed.

2 Hatchery Total Phosphorus (TP) Load Total Phosphorus (lbs) Figure. Long-Term Pattern of Hatchery Total Phosphorus Loads.

3 TP (lbs) TP (lbs) TP (lbs) TP (lbs) Figure 3. Monthly Hatchery Total Phosphorus Loads for 199 to 1.

4 Fish Total Phosphorus (TP) Total Phosphorus (lbs) 1 Lost Collected at Upper Weir Figure. Phosphorus Associated with Salmon that Pass the Lower Weir for 199 to 1.

5 Kinetic Processes Settling vs Resuspension Hydrolysis vs Algal Uptake Macrophyte Uptake and Growth vs Excretion and Sloughing Sediment release Wind Particulate P Soluble P Particulate P Soluble P Measurements Soluble and Total P Chlorophyll Dissolved Oxygen Turbidity Sediment TP Macrophyte species, area, density, tissue P Wind velocity and temperature Flow Figure 5. Processes that Effect Pond TP Removal Efficiency

6 Average Lake Total Phosphorus Concentration (TP) TP (mg/m3) % > mg/m3 1 % Figure. Long-Term Average TP and % > mg/l in Big Platte Lake.

7 Big Platte Lake Total Phosphorus (TP) 1 Total Phosphrus (mg/m3) Figure 7. Annual Variation of Volume-Weighted TP in Big Platte Lake for 199 to 1.

8 Volume of Layers (m 3 x 1 - ) Dissolved Oxygen Top Middle Bottom mg/l Top Middle Bottom Temperature Total Phosphorus Degrees, F Top Middle Bottom mg/m Top Middle Bottom Figure. Measurements summarized into Three Layers for 1.

9 Dissolved Oxygen (DO) at 9 Feet Dissolved Oxygen (mg/l) Figure 9. Annual Variation of Dissolved Oxygen at 9 Feet in Big Platte Lake for 199 to 1.

10 Secchi Depth Feet 1 1 Average Minimum Figure 1. Average and Minimum Secchi Depth (PLIA) in Big Platte Lake for 199 to 1.

11 Platte River Flow at USGS at US cfs Figure 11. Mean Annual Discharge at USGS Station at US-31.

12 Platte River Flow at USGS at US-31 cfs Sampled 1 3 cfs Figure. Daily and Monthly Flows of Platte River at USGS Station at US-31 for 199 to 1.

13 Total Phosphorus (TP) at USGS at US-31 mg/m Figure 13. Measured Total Phosphorus (TP) at USGS Station at US-31 for 199 to 1.

14 5 USGS TP vs Flow for USGS TP vs Flow for Linear Fit 3 Linear Fit R = R =.5 5 USGS TP vs Flow for 5 USGS TP vs Flow 1 3 Linear Fit 3 Linear Fit 1 R =. 1 R = Figure 1. USGS Flow at US-31 Correlation with Total Phosphorus (TP) for 199 to 1.

15 North Branch of the Platte River Flow cfs Figure 15. Measured Flow of the North Branch of the Platte River for 199 to 1.

16 North Branch of Platte River Total Phosphorus (TP) mg/m Figure 1. Measured Total Phosphorus (TP) of North Branch of Platte River for 199 to 1.

17 cfs North Branch Flow vs USGS Flow for 1 Linear Fit R =. TP m g/m North Branch TP vs North Branch Flow for 1 Linear Fit R =.1 cfs cfs Figure 17. North Branch of Platte River Correlations for 1.

18 BL Pond 1 Hatchery 7 Spring 5 1 Platte River at Bronson Lake 7 B. Spring to Hatchery Platte River at Fewins Rd B. Creek to Hatchery 3 Brundage Creek 9 Platte River in or out of Hatchery Stanley Creek 1 Inlet to Pond 5 Brundage Creek 11 Pond Outlet Kinney Creek Platte River at US - 31 Figure 1. Proposed Hatchery and Tributary Sampling Stations for.

19 19 1 Platte Lake 1 17 Honor Platte River at US Platte River at USGS 13 Upstream Carter Creek 1 North Branch at Deadstream 1 Carter Creek at mouth 19 North Branch at Hooker Rd 15 Platte River at Pioneer Rd Lake Outlet at M - 1 Collison Creek 1 Platte Lake at Center - Deep Figure 19. Proposed Lake and Tributary Sampling Stations for.

20 Figure. GIS Map of Sub-Watersheds and Proposed Sampling Stations (LTI).

21 TP (mg/m3) TP Secchi Depth (Feet) GLEC Secchi PLIA Secchi SI Algae.5 Chlorophyll (m g/m 3) Chloro-T 3 1 Zoop x ph 1 3 Dat Chloro-B Figure 1. Annual Variation of Total Phosphorus (TP), Secchi Depth, Saturation Index (SI), Chlorophyll, Algae and Zooplankton Numbers, and ph for 1.

22 Extra Loading Over Flow Tributary Flow and Loading Includes Hatchery Net Settling (v) Sediment Release Figure. One Layer Model Mechanisms

23 Total Flow, m3/day Tributary Loading and Flow Only Flow (m3/day) TP (mg/m3) Model Data TP Load, mg/day Tributary Loading, Flow, and v = 15 m/yr TP Load (mg/day) 1 3 TP (mg/m3) Model Data Figure 3. Model Results for Lake TP with Tributary Loads, Flow, and Constant Settling.

24 Extra Spring Load, mg/day Tributary Loading, Flow, v = 15 m/y, Extra Spring Load Extra TP Load (m g/day) 1 3 TP (m g/m 3) Model Data Settling Velocity, v, m/y Tributary Loading, Flow, Extra Spring Load, Variable v Velocity (v) (m /yr) TP (mg/m3) Model Data Figure. Model Results for Lake TP with Tributary Loads, Flow, Extra Spring Load, and Variable Settling.

25 Settling Velocity, v, m/y Tributary Loading, Flow, Extra Spring Load, Variable v Velocity (v) (m /yr) TP (mg/m3) Model Data Extra Loads, mg/day All Mechanisms Extra TP Load (mg/day) Model Data Figure 5. Model Results for Lake TP with Tributary Loads, Flow, Extra Spring and Fall Loads, and Variable Settling.

26 Annual Total Phosphorus Load for 1 1 kg USGS Hatchery North Branch Alewife Sediments Lost Fish Macrophytes Atmos Missing Figure. Components of the Total Phosphorus (TP) Loading to Big Platte Lake for 1.

27 Chlorophyll (mg/m3) 1 Chl vs Secchi Linear Fit R =.75 Chlorophyll (mg/m3) Chl vs Algae Linear Fit R = Secchi Depth (ft) Algal Count (number/l) Saturation Index 1.5 SI vs Chl Linear Fit R = SI vs Secchi Linear Fit R = Chlorophyll (mg/m3) -.5 Secchi Depth (ft) Figure 7. Correlation among Various Big Platte Lake Measurements for 1.

28 Secchi Depth Model vs Data Secchi Depth (ft) 1 Data model 1 3 Ke = (Chl) +.5 (SI) And SD = 1./Ke Where: Ke = Extinction Coefficient (1/ft) Chl = Chlorophyll (mg/m3) SI = Saturation Index SD = Secchi Depth (ft) Figure. Preliminary Model for Secchi Depth vs 1 Big Platte Lake Measurements.