The following is a compilation of maps, diagrams and photos related to the Delta and California water.
These maps and diagrams have been sourced from public documents and public sources. Historical photographs are from the National Archives/Library of Congress and WikiMedia. No known copyright restrictions exist.
Click on a image to view in a carousel. Right-click to download. To view larger, look for the option underneath the map or diagram in the lower right hand corner.
CATEGORIES: (Click on to jump, or scroll down to browse the collection)
DELTA MAPS AND IMAGES – GENERAL
DELTA – HISTORICAL MAPS AND PICTURES
AGRICULTURE AND IRRIGATION
CLIMATE CHANGE
FISH INDICES
FLOOD MAPS AND DIAGRAMS

Understanding Flood Risk, from the Delta Plan

100 Year Flood Stage Elevations, from the Delta Atlas, 1995
GROUNDWATER DIAGRAMS
HABITAT

Recommended Areas for Prioritization and Implementation of Habitat Restoration Projects From the Delta Plan

Habitat Types, Based on Elevation From the Delta Plan
HYDRAULIC MINING – HISTORICAL PHOTOS

From the USGS: Channel of American River near Folsom City, The lower terraces are of hydraulic tailings first deposited by the river and afterwards partly removed. Sacramento County, California. 1905.

‘Piping four streams from monitors (giants), with aggregate discharge of 2,500 miner’s inches at a hydraulic mine. Material is washed through bedrock cuts to the sluices which are not visible”, from WikiMedia
INFLOWS, OUTFLOWS, AND EXPORTS

Historical Delta Inflow and Delta Exports, from the Delta Plan

Historical Exports and In-Delta Use, from the Delta Plan

Who uses Delta Exports, from the Delta Plan

Flow Direction in the South Delta, from the Delta Plan
INFRASTRUCTURE
LEVEES

Delta Levee HMP Compliance, from the Delta Stewardship Council website

Levees in the Delta From the Delta Plan

Levee Standards From the Delta Plan
SOILS, SEISMICITY, AND SUBSIDENCE

Subsidence in the Delta, from the Delta Plan
STATE WATER PROJECT

State Water Project Historical Deliveries, from the 2011 SWP Reliability Report

Water quality stations important to the State Water Project, from SWP Reliability Report

State Water Project contract amounts for Table A water
TIDES
WATER QUALITY

Nutrients in the Delta, from the Delta Plan

Water quality stations important to the State Water Project, from SWP Reliability Report
STATEWIDE MAPS AND DIAGRAMS

California’s water infrastructure, from the Delta Plan

Where California’s Water Comes From, from the Delta Plan

Where Delta Water Comes From and Goes To, From the Delta Plan

State Water Project contractors