Solicitation Summary:
The Geographical Information Center (GIC) and The Center for Geospatial Science and Technology (CGST) are under contract with the California Department of Water Resources (CA DWR) to bring comprehensive updates to the National Hydrography Dataset (NHD) within the state of California. In the near future, GIC and CGST will also be implementing NHD maintenance on previously updated watershed throughout the state. This effort aims at making the NHD reflect current conditions in order to make it more reliable and accurate for end-users. While this process primarily uses the latest NAIP aerial imagery, it benefits from having additional supporting hydrographic data to be used as reference in the NHD update process. Accurate and vetted regional and local reference datasets can be useful in bringing comprehensive improvements to the NHD as they can provide additional detail that is not always accessible from readily available datasets. While the use of reference data does not necessarily result in the integration/migration of the data into the NHD, it often time does allow for the transfer of local knowledge into the NHD, resulting in an even more valuable and vetted NHD. This solicitation aims to help identify and eventually, collect local and regional datasets for potential use in the California NHD update effort.
Regions of Particular Interest:
Alpine County, Amador County, Butte County, Calaveras County, Colusa County, Del Norte County, El Dorado County, Fresno County, Glenn County, Humboldt County, Imperial County, Kern County, Lake County, Lassen County, Los Angeles County, Madera County, Mariposa County, Mendocino County, Merced County, Modoc County, Monterey County, Nevada County, Orange County, Placer County, Plumas County, Riverside County, Sacramento County, San Benito County, San Bernardino County, San Diego County, San Francisco County, San Joaquin County, San Mateo County, Santa Barbara County, Santa Cruz County, Shasta County, Sierra County, Siskiyou County, Sonoma County, Stanislaus County, Sutter County, Tehama County, Trinity County, Tulare County, Tuolumne County, Ventura County, Yuba County.
Specifications:
Hydrographic reference datasets with the following specifications are desired:
- Scale: 1:50,000 or finer
- Primary Composition/Features of Interest:
- River/Streams
- Lakes/Ponds/Reservoirs
- Washes
- Swamps/Marshes
- Canals/Ditches
- Attribution Composition:
- Seasonality/Periodicity of Rivers/Streams
- Feature Types
- Currentness: Updated within last 5 years
Contact Information:
Jane Schafer-Kramer, Jane.Schafer-Kramer@water.ca.gov; Department of Water Resources, Division of Planning
Erik Fintel, efintel@csuchico.edu; Geographical Information Center
Joel Osuna-Williams, joel.osuna@csun.eduCenter for Geospatial Science and Technology