Calflora About Layers

 

FOREGROUND LAYERS

County lines


Streams
From the USGS National Hydrology Dataset

BACKGROUND LAYERS

California Protected Areas Database
Version 1.7 (9/2011) from Greeninfo Network

The California Protected Areas Database (CPAD) is a GIS inventory of all protected park and open space lands in California. The database contains lands held in fee ownership by public agencies and non-profits.

The units level of this database is shown in Calflora map applications. Click in an area to see a description of the form

    name (owner) - access
  Open Access
  Restricted Access
  No Access
  Unknown Access

WATERSHEDS
From Calwater 2.2.

Calflora map applications can show the four levels of this dataset listed on the right. Which level is shown depends on how far in the map is zoomed.

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

MLRAs
Major Land Resource Areas (NRCS)

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

Zip Codes
From United States Census Bureau TIGER/Line Shapefiles


4ETa Zones
4ETa Zones indicating evaopotranspiration (NRCS California)

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

Average Annual Precipitation
Annual average precipitation during the period 1971 - 2000, as prepared by the Prism Climate Group at Oregon State University, and available in the form of polygons from the USDA Geospatial Data Gateway.

As presented in Calflora map applications, the colors indicating annual precipitation are continuous. Colors associated with selected precipitation values are shown on the right.

When using a map application, click on the map to find out the annual precipitation at that location.

157 inches
133 inches
107 inches
81 inches
61 inches
37 inches
17 inches
3 inches

ECOREGIONS
Bailey's Ecoregions are areas defined by common climatic and vegetation characteristics.

Ecoregion Sections and Subsections for California are from the USDA Forest Service Pacific Southwest Region. The 23 Sections are listed in the table on the right.

In Calflora map applications, Sections are displayed when the map is zoomed out, and Subsections are displayed when the map is zoomed in. Each Subsection has a color similar to that of its containing Section.

261A Central California Coast
261B Southern California Coast
262A Great Valley
263A Northern California Coast
322A Mojave Desert
322B Sonoran Desert
322C Colorado Desert
341D Mono
341E Lahontan Basin
341F Southeastern Great Basin
342B Northwestern Basin and Range
M242A Oregon and Washington Coast Ranges
M242B Western Cascades
M242C Eastern Cascades
M261A Klamath Mountains
M261B Northern California Coast Ranges
M261C Northern California Interior Coast Ranges
M261D Southern Cascades
M261E Sierra Nevada
M261F Sierra Nevada Foothills
M261G Modoc Plateau
M262A Central California Coast Ranges
M262B Southern California Mountains and Valleys