U.S. Department of the Interior
US Geological Survey
OFR-73016

This report is the first of an annual series that will describe the hydrologic conditions in Broward County, Florida. The general hydrologic conditions in Broward County for the 1971 water year (October 1, 1970, to September 30, 1971) are portrayed by geographically comparing long periods of record from rainfall, ground-water, surface-water, and water-quality stations with records from these stations for the 1971 water year. Major changes in hydrologic conditions in any year generally are a direct result of the amount and distribution of rainfall during that year. Major areal changes in conditions which may be permanent, result from construction of canals for drainage, establishment of controls on canals, withdrawals, and other such actions.

The purpose of this report is to summarize hydrologic data on an annual basis for short-term water-management planning. For example, a year of persistently low water levels (little rainfall) requires different water-management planning for the subsequent year than a year of average or high water levels.

The cooperative program of water resources studies between the U. S. Geological Survey and the Broward County Board of Commissioners is conducted through the Water Resources Department and the Air and Water Pollution Control Board.

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