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 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
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.
AGRICULTURE AND IRRIGATION
Agricultural Land Use in the Delta
Agricultural Drainage Returns, from the Delta Atlas, 1995
Irrigation Diversions, from the Delta Atlas, 1995
CLIMATE CHANGE
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
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
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
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
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
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
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
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
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
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
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
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
