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County lines

From the USGS National Hydrology Dataset

Observation shapes (polygons and lines)
Line and polygon data is available for certain weeds. To use this layer, first choose a particular weed. When you turn this layer on, the application will load any available shape data for the weed. Shapes appear as shown on the right. Note that most lines and polygons are tiny, so that you must zoom far in to see them.

Lepidium latifolium on the coast of Richmond
(Friends of Five Creeks)
Aegilops triuncilias near Terra Linda
(Marin County Open Space District)

Polygon: Line:

Initially, the application indicates point observations visually as and shape observations as . This differentiation makes it easier to find shapes when the map is zoomed out. Once you have zoomed into an area that has shape observations, you can open Map Symbols and make both point and shape observations have the same symbol, or turn off the symbol for shape observations.

From Calwater 2.2.

Level Example
Planning Watershed 3309.811105 Little Burnett Creek
Super Planning Watershed 3309.8111 McLaughlin Canyon
Hydrologic Area 3309.8 Paso Robles
Hydrologic Unit 3309. Salinas

Major Land Resource Areas (NRCS)

  03Oregon Desert
  04AOregon Coast
  04BCalifornia Coastal Redwood Belt
  05Siskiyou - Trinity Area
  06Oregon Desert
  14Central California Coastal Valleys
  15Central California Coastal Range
  16California Delta
  17Sacramento - San Joaquin Valleys
  18Sierra Nevada Foothills
  19Southern California Coastal Plains
  20Southern California Mountains
  21Klamath and Shasta Valleys
  22ASierra Nevada Mountains
  22BSouthern Cascade Mountains
  23Malheur High Plateau
  26Carson Basin and Mountains
  29Southern Nevada Basin and Range
  30Mojave Basin and Range
  31Colorado Desert


4ETa Zones indicating evaopotranspiration (NRCS California)

  b18 - 21inches
  c15 - 18inches
  d12 - 15inches
  e9 - 12inches
  f6 - 9inches
  g3 - 6inches
  h0 - 3inches