2. Outline 1.Introductions 2.What is the NHD? 3.Why is it important to Tribes?

3. Kimberly Johnston-Dobbs kimberly.johnston-dodds@water.ca.gov Christina Boggs christina.boggs@water.ca.gov kimberly.johnston-dodds@water.ca.gov christina.boggs@water.ca.gov Carol Ostergren National Geospatial Program costergren@usgs.gov costergren@usgs.gov Hank Nelson Technical NHD Lead hpnelson@usgs.gov hpnelson@usgs.gov USGS Contacts

4. What is the NHD and why is it important to Tribes?

5. What is the National Hydrography Dataset? Essentially the surface water features found on topographic maps

6. High Resolution National Hydrography Dataset Statistics Area FeatureKm 2 Mi 2 # Features Lakes 1 134,07351,7666,237,938 Rivers 2 49,74119,205 Water Plants 3 2,524975136,447 Swamp/Marsh 4 107,17641,381942,072 Ice Mass69,23626,73321,643 Inundation Area 5 10,3523,997 1 - Not including the Great Lakes 2 - Including only river polygon area, not single-line river area 3 - Typically water filtration, sewage treatment, fish hatcheries 4 - Based on USGS topographic mapping standards – not National Wetland Inventory 5 - Difference between normal pool area of lakes and area at spillway height

7. High Resolution National Hydrography Dataset Statistics Linear FeatureKmMiAdditional Data Streams 1 10,463,1366,501,479 Perennial 5 – 3,207,571 Km Intermittent 5 – 7,190,124 Km Artificial Path 2 1,139,929708,318 In River ~ 353,378 Km In Lake ~ 638,360 Km Canal/Ditch528,909328,648 Water Pipeline16,82610,455 Connector 3 29,70618,458 Coastline 4 151,70594,265 1 – Generic, perennial, and intermittent single-line streams 2 – Linear pathway distance through lakes, river polygons, canal polygons, and some marsh/swamp 3 – Pathway known to exist, but not seen on imagery 4 – Including Great Lakes 5 – Not conclusive

8. Streams – Creating the fundamental network Swan Creek Perennial Intermittent Ephemeral

9. Flow Direction – Providing intelligence to the data

10. Navigation – The basis for analysis

11. Navigation – Where does a toxic spill go?

12. Reach 14010002000421 Reach 14010002003345 Linear Referencing – Stream “Reaches”

13. 100 0 50 75 25 14010002000421 Linear Referencing – Stream addresses

14. USGS Streamgage 09050000 Address: Reach – 14010002000421 Measure – 19.8392 Coordinate 106 05 13.955 W 39 32 43.472 N Linear Referencing – Data “Events”

15. The river gains intelligence about streamflow

16. Connecting the streamgage to the network Streamgage Dam Blue River Artificial Path (Blue River) Green Mountain Reservoir

17. Dams and Streamgages Integrated with the NHD

18. nationalmap.gov

19. The National Map Hydrography Elevation Orthoimagery Transportation Structures National Hydrography Dataset Watershed Boundary Dataset Lakes Streams Fish Habitat Chemistry Cutthroat Trout Map Portal

22. PASSAGE BARRIERS IN CALIFORNIA

24. Flow volume estimates in the NHDPlus do not account for diversions NHDPlus estimates only natural stream flow Colorado River Photo courtesy of Jonathan Waterman

25. Trans - Basin Diversions Subregional Regional Subbasin 3 Levels

26. Inter- Regional

27. Colorado River Aqueduct Diversion 242 miles long 1.2 million acre-feet per year Colorado River Aqueduct Diversion 242 miles long 1.2 million acre-feet per year

28. Inter- Subregional

29. California Aqueduct 444 miles long 2.6 million acre-feet per year California Aqueduct 444 miles long 2.6 million acre-feet per year Inter- Subregional

30. Inter- Subbasin

31. California Diversions

32. 32 A cartographic curiosity - Any guesses what this is? Thank for your attention this afternoon! More info at www.nhd.usgs.gov