by Ruth Gustafson – May 20, 2022

Welcome to the UC Davis Library subject guide for hydrology. This guide provides links to key information resources in hydrology, hydrogeology, earth system processes, and water policy and management.

FOR UCD students, faculty, and staff:   Feel free to book an appointment with Ruth for assistance in using these resources or for any questions you may have.   Ruth is continuing with Zoom appointments.  (Exceptions will be made if in-person or phone is the only/best option for the requestor.)

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Off-Campus Access

  • To access licensed library resources from off-campus, please use the library VPN.

[Original Content by Cory Craig, Jennifer (JJ) Harbster, and Carol La Russa]

Ruth Gustafson

Student Services
Student Services and Researcher Services Librarian



In this Guide:

Searching in a library catalog requires looking for broader topics such as stream flow modelling or aquifer recharge rather than the more specific AI models stream flow forecasting  or California aquifers artificial recharge.

  • UC Library Search: UCD Library Catalog setting
    Replacing UCD Library Catalog on July 27, 2021, the new UC Library Search includes all of the UC library collections.   This setting is specifically for the UC Davis libraries including (for the first time) the holdings of the Law Library. If you Sign in (on top right corner) using your UCD login and Kerberos passphrase, you are prompted with your loan period, can renew books online, and request items that have been checked out to another borrower, or are in storage.


  • Understanding Call Numbers

    Author: Library Instruction Services, Shields Library

    Library of Congress Classification is used for all of the UCD libraries except the health sciences libraries (which use NLM — National Library of Medicine — classification). Learn about how books are arranged in the UCD libraries with this guide.

    Date: 2004

These are federal and international sources of information.  See California Water Resources for state and regional information.

Encyclopedia of Estuaries
Encyclopedia of Lakes and Reservoirs
Encyclopedia of Snow, Ice and Glaciers
Encyclopedia of Water Science
Encyclopedic Dictionary of Hydrology

Comprehensive reference guide with complete definitions of terms in hydrogeology and other fields closely related to water practice.

Water Glossary

Glossary of water-related terms from the California Department of Water Resources.

Water Resources Collections and Archvies

The Water Resources Collections & Archives (WRCA) acquires, preserves, and provides access to materials that document water-related issues throughout the United States and beyond, with a particular emphasis on issues affecting the state of California.  The physical archives are located at UC Riverside.

Water Science Glossary of Terms

Water-related terms compiled from a number of sources by the US Geological Survey (USGS).

These are federal and international sources of information.  See California Water Resources for state and regional information.

Global Runoff Database

Global database of river discharge data from the Global Runoff Data Center which is an International data center operating under the auspices of the World Meteorological Organization (WMO).

Ground Water Atlas of the United States

Describes the ground-water resources of regional areas that collectively cover the 50 States, Puerto Rico, and the U.S. Virgin Islands.

National Water Model

The National Water Model (NWM) is a hydrologic model that simulates observed and forecast streamflow for the continental United States.

Surf Your Watershed

Data for watersheds from the EPA searchable by geographic location.

USGS Streamer

Visualize water flow through major streams in the United States by tracing them upstream to their source or downstream to where they empty.

Water Data

Data tables from The World’s Water series published by the Pacific Institute.

Water Resources of the United States

Water resources is one of seven science mission areas of the U.S. Geological Survey (USGS). The USGS works with partners to monitor, assess, conduct targeted research, and deliver information on a wide range of water resources and conditions including streamflow, groundwater, water quality, and wateruse and availability.

Water Topics

From the EPA’s Office of Water. Includes informative articles, educational resources, grant information, and regulatory reports.


AQUASTAT is “FAO’s global information system on water resources and agricultural water management. It collects, analyses and provides free access to over 180 variables and indicators by country from 1960. AQUASTAT draws on national capacities and expertise with an emphasis on Africa, the Near East, countries of the former Soviet Union, Asia, and Latin America and the Caribbean. AQUASTAT plays a key role in the monitoring of the Sustainable Development Goal 6 that sets out to ‘ensure availability and sustainable management of water and sanitation for all’, and in particular indicators of target 6.4 on water stress and water use efficiency.”


The Water Education Foundation’s online water encyclopedia contains vetted information about the places, people and topics key to water in the West.

CADWR Land Use Viewer

Provides access to statewide and county land use survey data sets for the past 30 years.

California Data Exchange Center (CDEC)

The CDEC operates an extensive hydrologic data collection network including snow reporting gages and and precipitation and river stage sensors for flood forecasting.

California Department of Water Resources (CADWR)

DWR manages California’s water resources, systems, and infrastructure, including the State Water Project (SWP).

California WaterBlog

Informative blog on California water topics from the UC Davis Center for Watershed Sciences. 

California Water Plan

The California Water Plan is the State government’s strategic plan for managing and developing water resources statewide.

California Water Science Center

California water data from the US Geological Survey.

California Water Virtual Tour

This tour is a compilation of videos describing the physical, legal and water management issues in the California water landscape.  From the UC Davis Cooperative Extension Water Management website.

Disadvantaged Communities Mapping Tool

Tool from the Department of Water Resources that shows disadvantaged communities through out the state.

Groundwater Information and Educational Resources

From the UC Division of Agriculture and Natural Resources.

Maven's Notebook

California water news

PPIC Water Policy Center

The Public Policy Institute of California’s Water Policy Center which focuses on three critical challenges to California water: water supplies, healthy and resilient ecosystems, and droughts and floods.

Water and Drought News (Sacramento Bee)

California water & drought related news from the Sacramento Bee newspaper.

Water Data Library

Data from monitoring stations throughout the state of California.