California’s North Coast Region GIS Layers

May 1, 2002Streamflow and Water Availability

Estimates in Ungaged Streams

California’s North Coast Region GIS Layers

California’s North Coast Region GIS Layers

Lorri Peltz-LewisU.S. Bureau of Reclamation

Lorri Peltz-LewisU.S. Bureau of Reclamation



Watershed Basin Characteristics:Total Drainage, Contributing Drainage, Non-Contributing

Drainage, Perimeter, Shape Factors, Effective Width, Compactness, Elongation, Relief, Relative Relief, Total Stream Length, Main Channel Length, Channel Slope, Basin Slope, Basin Length, Drainage Density, etc.

Geospatial Data Layers Reviewed Here: National Elevation Data (NED) or Digital Elevation

Model (DEM) National Hydrologic Database (NHD) Elevation Derivatives for National Applications

(EDNA) Watersheds - CALWATER

Watershed Basin Characteristics:Total Drainage, Contributing Drainage, Non-Contributing

Drainage, Perimeter, Shape Factors, Effective Width, Compactness, Elongation, Relief, Relative Relief, Total Stream Length, Main Channel Length, Channel Slope, Basin Slope, Basin Length, Drainage Density, etc.

Geospatial Data Layers Reviewed Here: National Elevation Data (NED) or Digital Elevation

Model (DEM) National Hydrologic Database (NHD) Elevation Derivatives for National Applications

(EDNA) Watersheds - CALWATER



National Elevation Data (NED)

Seamless raster elevation database

Combination of 10 & 30 m –

final currently 30 m – future will be 10 m.

Processing to eliminate merge problems

Digital Elevation Model (DEM)

Raster elevation database

10 & 30 m data files

Tiled by quadrangle

Others:

LIDAR, SAR, RADAR, etc.

National Elevation Data (NED)

Seamless raster elevation database

Combination of 10 & 30 m –

final currently 30 m – future will be 10 m.

Processing to eliminate merge problems

Digital Elevation Model (DEM)

Raster elevation database

10 & 30 m data files

Tiled by quadrangle

Others:

LIDAR, SAR, RADAR, etc.



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References:

Gesch, Dean et.al, 2002. The National Elevation Dataset, PE&RS January 2002. www.asprs.org/asprs/publications/pe&rs/2002journal/january/highlight.html

Franken, S.K. et.al, 2001. Development of a National Seamless Database of Topograhy and Hydrologic Deravatives, ESRI 2001 Users Conference

www.esri.com/library/userconf/proc01/professional/papers/pap730/p730.htm

http://edcnts12cr.usgs.gov/ned/

References:

Gesch, Dean et.al, 2002. The National Elevation Dataset, PE&RS January 2002. www.asprs.org/asprs/publications/pe&rs/2002journal/january/highlight.html

Franken, S.K. et.al, 2001. Development of a National Seamless Database of Topograhy and Hydrologic Deravatives, ESRI 2001 Users Conference

www.esri.com/library/userconf/proc01/professional/papers/pap730/p730.htm

http://edcnts12cr.usgs.gov/ned/



National Hydrologic Database (NHD)

Seamless vector hydrology database

representing surface hydrology

100K currently available, 24K under

development

Comprehensive inter-related relational

database.

http://nhd.usgs.gov/

National Hydrologic Database (NHD)

Seamless vector hydrology database

representing surface hydrology

100K currently available, 24K under

development

Comprehensive inter-related relational

database.

http://nhd.usgs.gov/



Challenges for a national database – blank area is San Jose. Hydrology disappears – red line is connector for unknown.Challenges for a national database – blank area is San Jose. Hydrology disappears – red line is connector for unknown.



Elevation Derivatives for National Applications (EDNA):

New Product!!

Systematic derivation of standard hydrologic derivatives using NED and NHD

http://edcnts12cr.usgs.gov/ned-h/

Elevation Derivatives for National Applications (EDNA):

New Product!!

Systematic derivation of standard hydrologic derivatives using NED and NHD

http://edcnts12cr.usgs.gov/ned-h/



Watersheds Basin Delineation:

USGS HUC 250K Original delineations done by USGS Problem areas – Central Valley

CALWATER 24K Delineations for California Not all watershed oriented, some administrative boundaries http://www.ca.nrcs.usda.gov/wps/calwater

CA delineations being reviewed following NRCS & USGS national methodology.

Watersheds Basin Delineation:

USGS HUC 250K Original delineations done by USGS Problem areas – Central Valley

CALWATER 24K Delineations for California Not all watershed oriented, some administrative boundaries http://www.ca.nrcs.usda.gov/wps/calwater

CA delineations being reviewed following NRCS & USGS national methodology.



HUC250 and CALWATER – status of review here!!!

HUC250 and CALWATER – status of review here!!!



North Coast Watershed Assessment Program

GIS Data and SynthesisChris Keithley

Utilization of high resolution GIS data.

North Coast Watershed Assessment Program

GIS Data and SynthesisChris Keithley

Utilization of high resolution GIS data.

California’s North Coast Region GIS Layers

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