NHDPlusV1 California Data
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California (Hydrologic Region 18)
The California drainage area is composed of hydrologic region 18.
The California hydrologic regions are further divided into production units: 18 a, b, and c.
NHDPlus Shapefile and DBF components are distributed by hydrologic region.
NHDPlus ESRI Grid components are distributed by production units.
For more information please see California Release Notes (DOC)(3 pp, 34 K) or California Release Notes (PDF)(3 pp, 16 K, About PDF).
The following links exit the site Exit
FILENAME KEY
NHDPlusrrVnn_componentname.zip
where:
- rr is the hydrologic region number
- nn is the currently available version of the data
- componentname describes the content of the zip file
| File Description | File Name (.zip) | Format |
|---|---|---|
| Region 18 , Version 01_01, Catchment Grid | NHDPlus18V01_01_Catgrid | ESRI Grid |
| Region 18, Version 01_01, Catchment Shapefile | NHDPlus18V01_01_Catshape | Shapefile |
| Region 18, Version 01_03, Catchment Flowline Attributes | NHDPlus18V01_03_Cat_Flowline_Attr | DBF |
| Region 18, Version 01_01, Elevation Unit a | NHDPlus18V01_01_Elev_Unit_a | ESRI Grid |
| Region 18, Version 01_01, Elevation Unit b | NHDPlus18V01_01_Elev_Unit_b | ESRI Grid |
| Region 18, Version 01_01, Elevation Unit c | NHDPlus18V01_01_Elev_Unit_c | ESRI Grid |
| Region 18, Version 01_01, Flow Accumulation and Flow Direction Unit a | NHDPlus18V01_01_FAC_FDR_Unit_a | ESRI Grid |
| Region 18, Version 01_01, Flow Accumulation and Flow Direction Unit b | NHDPlus18V01_01_FAC_FDR_Unit_b | ESRI Grid |
| Region 18, Version 01_01, Flow Accumulation and Flow Direction Unit c | NHDPlus18V01_01_FAC_FDR_Unit_c | ESRI Grid |
| Region 18, Version 01_01, National Hydrography Dataset | NHDPlus18V01_02_NHD | Shapefile and DBF |
| Region 18, Version 01_01, QAQC & Sinks Spreadsheet | NHDPlus18V01_01_QAQC_Sinks | Excel Spreadsheet |
| Region 18, Version 01_01, Stream Gage Event | NHDPlus18V01_01_StreamGageEvent | DBF |