Maps and diagrams

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 Historical Maps and Pictures
Agriculture and Irrigation
Climate Change
Fish Indices
Flood Maps and Diagrams
Groundwater diagrams
Habitat
Hydraulic Mining – Historical Photographs

Inflows, Outflows, Exports
Infrastructure
Levees
Soils, Seismicity, and Subsidence
State Water Project
Tides
Water Quality
Statewide Maps and Diagrams
Miscellaneous

DELTA MAPS AND IMAGES – GENERAL

Delta Map with named islands

Delta Map with named islands

Primary and Secondary Zones

Agricultural Land Use in the Delta

Delta communities

Major Delta Resources and Recreation

State Parks and Other Protected Lands

Delta Waterways, from the Delta Atlas, 1995

Constructed Waterways in the Delta, from the Delta Atlas, 1995

Deep Water Ship Channels, from the Delta Atlas, 1995

Water Development Facilities, from the Delta Atlas, 1995

Delta Counties, from the Delta Atlas, 1995

San Francisco Bay and Delta, by USGS

Water Districts and Agencies, from the Delta Atlas, 1995

Delta Watershed, extended; from the Delta Plan

Map of Delta tributaries, from the State Water Board

Return to top

DELTA – HISTORICAL MAPS AND PICTURES

Delta Map, 1869 From DWR’s Delta Atlas

Sacramento and Tulare Valleys, 1873, from WikiMedia

Historical and Modern Delta, from the Delta Plan

Historical Landscapes, from the Delta Plan

Holt prototype tractor on Roberts Island, 1905, from WikiMedia

River Lines steamboat advertisement, from WikiMedia

City of Sacramento during the flood of 1850, from the National Archives

Flooding, State Capital, 1862, from WikiMedia

Sacramento Railroad Depot 1866, from the National Archives

From the USGS: People in Sacramento navigate K Street in rowboats during the California flood of 1861-62, which historians say obliterated up to 25 percent of the assessed property value in the state.

Return to top

AGRICULTURE AND IRRIGATION

Agricultural Land Use in the Delta

Agricultural Drainage Returns, from the Delta Atlas, 1995

Irrigation Diversions, from the Delta Atlas, 1995

Return to top

CLIMATE CHANGE

Return to top

FISH INDICES

Threadfin Shad Indices, 1967-2012, Fall Midwater Trawl

Age-0 Striped Bass Indices, 2967-2012, Fall Midwater Trawl

American Shad Indices, 1967-2012, Fall Midwater Trawl

Delta Smelt Indices, 1967-2012, Fall Midwater Trawl

Longfin Smelt Indices, 1967-2012, Fall Midwater Trawl

Splittail Indices, 1967-2012, Fall Midwater Trawl

Return to top

FLOOD MAPS AND DIAGRAMS

Sacramento and San Joaquin River Flood Control Schematic April 2012

Water travel time, in hours DWR Flood Operations

Sacramento Valley Flood Control System Estimated Channel Capacity November 2003

Sacramento and San Joaquin River Systems Projects and Levees Undated

Sacramento Valley, Delta, and San Joaquin River Flood Control System Design Flows Undated

Sacramento River Flood Control System November 2003

Sacramento and San Joaquin River Forecast Points and County Lines

Sacramento Valley Flood Control System

Understanding Flood Risk, from the Delta Plan

Historical Flooding, 1930 to 1966

Historical Flooding, 1967 to 1992

100 Year Flood Stage Elevations, from the Delta Atlas, 1995

Delta Levee Mainenance Expenditures, 1981-1993, from the Delta Atlas, 1995

Flooding, State Capital, 1862, from WikiMedia

City of Sacramento during the flood of 1850, from the National Archives

Return to top

GROUNDWATER DIAGRAMS

Return to top

HABITAT

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

Habitat Types, Based on Elevation From the Delta Plan

Return to top

HYDRAULIC MINING – HISTORICAL PHOTOS

Placer tailings, Folsom City. Sacramento County, California. 1905. From the USGS

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

View of gold miners excavating an eroded bluff with jets of water at a placer mine in Dutch Flat, California, between 1857 and 1870.; from WikiMedia

Return to top

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

Where Delta Water Comes From and Goes To

Return to top

INFRASTRUCTURE

Federal and State Highways, from the Delta Atlas, 1995

County Roads, from the Delta Atlas 1995

Islands requiring ferry access, from the Delta Atlas, 1995

Natural Gas Facilities, from the Delta Atlas, 1995

Power Transmission Lines, from the Delta Atlas, 1995

Railroads, from the Delta Atlas, 1995

Return to top

LEVEES

Delta Levee PL84-99 Compliance, from the Delta Stewardship Council website

Delta Levee HMP Compliance, from the Delta Stewardship Council website

Levees in the Delta From the Delta Plan

Levee Standards From the Delta Plan

Return to top

SOILS, SEISMICITY, AND SUBSIDENCE

Subsidence in the Delta, from the Delta Plan

Land Below Sea Level, from the Delta Atlas, 1995

Lowest Surface Elevations, from the Delta Atlas 1995

Thickness or Organic Materials, from the Delta Atlas, 1995

Return to top

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

Return to top

TIDES

Delta Tidal Flows, from the Delta Atlas, 1995

Delta Tide Levels, from the Delta Atlas, 1995

Comparison of Delta Outflows with Tidal Flows, from the Delta Atlas, 1995

Return to top

WATER QUALITY

Maximum Salinity Intrusion, 1921 to 1943, from the Delta Atlas, 1995

Maximum Salinity Intrusion, 1944 to 1990, from the Delta Atlas, 1995

Key Water Quality Monitoring Stations, from the Delta Atlas 1995

Nutrients in the Delta, from the Delta Plan

Salinity in the Delta varies by inflow volumes

State Water Board Compliance Monitoring Stations

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

Return to top

STATEWIDE MAPS AND DIAGRAMS

California’s water infrastructure, from the Delta Plan

California water infrastructure, by Department of Water Resources

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

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

Hydrogeologically vulnerable areas

Dams in California

California water infrastructure, labeled

State Water Project contractors

MISCELLANEOUS

Return to top