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 2003-2004 HYDROLOGIC REPORT
 Sections
Introduction 
Los Angeles County
Flood Control and Water Conservation
Precipitation
Evaporation
Runoff
Reservoirs
Erosion Control
Water Conservation
Acknowledgments
Disclaimer
2003-2004 Hydrologic Report
This report discusses hydrologic data relative to the County of Los Angeles for the period beginning October 1, 2003, and ending September 30, 2004. Public Works has revised the format of this report to provide users with more useful data and a more efficient means of utilizing that data. The report consists of six sections.
PRECIPITATION
Lists 242 active rainfall stations for which unpublished rainfall data are on file at Public Works.
 
 
EVAPORATION
Lists 13 evaporation station locations and data for this reporting period. Unpublished evaporation data from previous years are on file at Public Works.
 
 
RUNOFF
Lists 56 active stream gaging stations. The mean of the daily flow rates during the reporting period, the reporting period's peak flow rate, and historical peak flow rate for each of these stations are contained in this section. Unpublished stream flow data are on file at Public Works.
 
 
   
RESERVOIRS
Lists 14 dams and reservoirs for which inflow, outflow, and storage data are on file at Public Works.
 
 
EROSION CONTROL
118 debris basins. Data on the debris production amounts for the reporting period are contained in this section. Unpublished debris production and inflow data are on file at Public Works.
 
 
WATER CONSERVATION
Lists 27 groundwater recharge locations. Data on the water conserved at various facilities and water injected at seawater barrier projects during the reporting period, and historical well level data for key wells are contained in this section. Unpublished water conservation data from previous years are on file at Public Works.
 

Unpublished information may be obtained by contacting:

County of Los Angeles
Department of Public Works
Water Resources Division
P.O. Box 1460
Alhambra, CA 91802-1460
...or telephone: (626) 458-6120