Restoring floodplains and riparian forest: Lessons from the Cosumnes River

Naturally-functioning floodplains provide a variety of ecosystem services, including habitat for diverse species.  California’s rivers are highly altered, with levees that disconnect floodplains, dams that alter flows, and land use practices that have destroyed most than 90  percent of riparian...

Comparative Analyses of Ecological Integrity Indices as Applied to Waters of the Mokelumne River Watershed

Freshwater resources and ecosystems are globally impaired by human activities and acutely
stressed throughout California, including the rivers and streams of the Sierra Nevada. We
assessed the condition of the Mokelumne River, a representative watershed located in the
central...

Characterizing Hydrologic Variability of the Cosumnes River Floodplain

Natural riverine and floodplain ecosystems are adapted to highly variable hydrologic regimes, which include periodic droughts, infrequent large floods, and relatively frequent periods of inundation. To more effectively manage water resources and maintain ecosystem services provided by rivers and...

Patterns of regional and local riparian plant diversity in the California Sacramento - San Joaquin Valley

The widespread degradation of riparian ecosystems requires that we more fully understand patterns of plant diversity at multiple scales to inform restoration and conservation efforts locally and regionally. We analyzed the distribution of riparian plant diversity in California's Sacramento - San...

Geographic Information System support for total maximum daily load analysis of the Mattole River Watershed, Humboldt County, California

The Mattole River Watershed (Figure 1), Humboldt County, California, is listed on the Clean Water Act Section 303(d) list of impaired water bodies, for sediment and temperature. As required by this section and subsequent litigation, the North Coast Regional Water Quality Control Board (NCRWQCB)...

Watershed analysis tool for environmental resources: GIS technology in the new millennium

The Information Center for the Environment (ICE), UC Davis, is currently developing a decision support system to facilitate watershed analyses by state resource agencies in California. ICE is using the latest in ESRI GIS to provide resource managers critical environmental data, including a...

Improving water quality reporting in California with the Geo Waterbody system

In California, water quality assessment information is currently reported via a FoxPro (DOS) system known as the WaterBody System (WBS). WBS does not have a spatial component, and therefore users typically enter information for large named water courses. Several states, including California,...

California's Experience with the river reach file

Organized hydrographic information is vital to the success of environmental planning and management. Joint efforts from the USGS and U.S. EPA to produce a spatial base and attribute model, respectively, have resulted in an alpha release of the River Reach File, a national hydrographic standard (...

California rivers assessment: Assembling environmental data to characterize California's watersheds

The California Rivers Assessment (CARA) is a computer-based geographic data management system designed to give resource managers, policy-makers, landowners, scientists and interested citizens rapid access to essential information and tools with which to make sound decisions about the...

Hydrolapse Videography: A Coupled Hydroinformatic Stack For Improved Visual Assessment Of River Dynamics

A central problem for managers of river ecosystems is understanding hydrodynamics in an intelligible fashion for effective decision-making. Too often decisions are based on some combination of incomplete hydrologic time series, poorly parameterized models, photographic snapshots of the place in...

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