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Russian River Integrated Hydrologic Model (RRIHM): Wells

March 1, 2024

The Russian River Watershed (RRW) covers about 1300 square miles (without Santa Rosa Plain) of urban, agricultural, and forested lands in northern Sonoma County and southern Mendocino County, California. Communities in the RRW depend on a combination of Russian River water and groundwater to meet their water-supply demands. Water is used primarily for agricultural irrigation, municipal and private wells supply, and commercial uses - such as for wineries and recreation. Annual rainfall in the RRW is highly variable, making it prone to droughts and flooding from atmospheric river events. In order to better understand surface-water and groundwater issues, the USGS is creating a Coupled Ground-Water and Surface-Water Flow Model (GSFLOW; Markstrom and others, 2008) of the RRW. This model will include climate, geology, surface-water, groundwater, and land-use data.

This data release is part of the larger Russian River Integrated Hydrologic Model (RRIHM) community of data releases ( It contains 4 shapefiles and a comma separated values (.csv) file. The data release includes municipal and industrial wells represented in the MODFLOW Multi-Node Wells package, along with rural domestic wells represented in the MODFLOW Wells package (Harbaugh, 2005; Konikow, L.F., et al., 2009)

Harbaugh, A.W., 2005, MODFLOW-2005, the U.S. Geological Survey modular ground-water model -- the Ground-Water Flow Process: U.S. Geological Survey Techniques and Methods 6-A16. Konikow, L.F., Hornberger, G.Z., Halford, K.J., and Hanson, R.T., 2009, Revised multi-node well (MNW2) package for MODFLOW ground-water flow model: U.S. Geological Survey Techniques and Methods 6–A30, 67 p.

Publication Year 2024
Title Russian River Integrated Hydrologic Model (RRIHM): Wells
DOI 10.5066/P95BFU08
Authors Ayman H Alzraiee, Sandra Bond, Christopher P Ely, Saalem T Adera, Whitney A Seymour
Product Type Data Release
Record Source USGS Digital Object Identifier Catalog
USGS Organization Sacramento Projects Office (USGS California Water Science Center)