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MODFLOW-OWHM used to characterize the flow system of the Petaluma River Watershed, Sonoma County, California

Metadata Updated: October 28, 2023

The Petaluma Valley integrated hydrologic model (PVIHM) was developed by the U.S. Geological Survey (USGS) in cooperation with the Sonoma County Water Agency and the City of Petaluma. The PVIHM simulates the 99,000-acre Petaluma valley watershed and includes 54,000 acres where groundwater flow is active. The model simulates 56 years of historical hydrology (water years 1960–2015) that includes a range of wet and dry climatic conditions. The model incorporates data collected from local (Sonoma County Water Agency and City of Petaluma), State, and Federal sources. The PVIHM is an integrated hydrologic model that simulates groundwater-flow, surface-water flow, and land-surface process systems in a single model using MODFLOW-OWHM. The model was calibrated using observed groundwater altitudes from 41 groundwater monitoring wells and measured streamflow data from 3 USGS streamflow gages. The model generates monthly water budgets for water use, groundwater flow, and streamflow for water years 1960–2015 as well as groundwater altitude hydrographs, simulated streamflow hydrographs, and maps of simulated groundwater altitude. This USGS data release contains all of the input and output files for the PVIHM model, which are described in the associated Scientific Investigation Report (

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date June 1, 2023
Metadata Updated Date October 28, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date October 28, 2023
Publisher U.S. Geological Survey
Identifier USGS:56042dc9-9d6c-4b29-98ea-2002407d973b
Data Last Modified 20220126
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 1abd1d25-78b3-4734-bcbb-6199161b6b06
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -122.82712,38.02276,-122.38765,38.38039
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash 87b0e9f09bb6a794d0325b55ce3c4c461d3ae81b59a2cc7150a7365998b99190
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -122.82712, 38.02276, -122.82712, 38.38039, -122.38765, 38.38039, -122.38765, 38.02276, -122.82712, 38.02276}

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