Watershed-Based Management Plan Figures

Figure 1. Map of the China Lake direct watershed (yellow) and adjacent watersheds

Figure 2. Base map of the China Lake watershed

Figure 3. Before and after 2021 land cover update map for the China Lake watershed

Figure 4. Bathymetric map for China Lake

Figure 5. 2020 China Lake sediment sampling locations

Figure 6. NRCS soil series displayed by parent material in the China Lake watershed

Figure 7. Septic vulnerability analysis for soils in the China Lake watershed

Figure 8. Water resources in the China Lake watershed

Figure 9. Water quality monitoring stations in China Lake

Figure 10. Minimum annual SDT for China Lake, all Stations (1970 – 2020)

Figure 11. Trend plot of SDT at Station 1 over the entire sampling period with results of Mann-Kendall Trend Tests

Figure 12. Decadal means for SDT in China Lake, Station 1

Figure 13. Decadal medians for TP in China Lake, Station 1

Figure 14. Trend plots of epilimnetic TP over the past 10 years for China Lake, Station 1 with results of Mann-Kendall Trend Tests

Figure 15. Mean annual Chl-a for China Lake, Stations 1, 2, and 3

Figure 16. Trend plots of Chl-a over the past 10 years for China Lake, Station 1 with results of MannKendall Trend Tests

Figure 17a & 17b. Trend plot of Chl-a over the entire sampling period and decadal means for Chl-a in China Lake, Station 2

Figure 18. August 2020 dissolved oxygen profiles at China Lake, Stations 1, 2 & 3

Figure 19. China Lake direct and indirect watersheds and sub-basins used in the China Lake LLRM

Figure 20. Watershed land cover area by general category and total phosphorus (TP) load by general land cover type

Figure 21. Percentage of total phosphorus loading (kg/yr) by source to China Lake, East Basin

Figure 22. Percentage of total phosphorus loading (kg/yr) by source to China Lake, West Basin

Figure 23. Phosphorus load by minor basin in the China Lake Watershed, East Basin

Figure 24. Phosphorus load by minor basin in the China Lake Watershed, West Basin

Figure 25. Phosphorus load by basin (A through J) in the China Lake watershed (all lake basins)

Figure 26. Phosphorus load by basin (E through J) in the China Lake Watershed (West Basin only)

Figure 27. 50-year annual precipitation and snowfall in Waterville, ME 1960-2020

Figure 28. Predicted in-lake phosphorus concentration with future development and climate change scenarios for China Lake, East Basin

Figure 29. Predicted in-lake phosphorus concentration with future development and climate change scenarios for China Lake, West Basin

Figure 30. Map of high, medium, and low-impact NPS sites from the 2020 China Lake watershed survey

Figure 31. Number of NPS sites identified in the China Lake watershed by land use and impact rating