WATER RESOURCES OF ORANGE COUNTY 139
area and are locally recharged, the water levels reach equilibrium quickly. Most of the drawdown in the vicinity of the pumping well occurs within the first 15 minutes after pumping begins.
WATER USE
Water use in Orange County has increased greatly in the past and is expected to continue to increase in the future (fig. 62). In 1963 all municipal, domestic, and industrial supplies (except cooling) and nearly half the agricultural supplies of water were obtained from wells. Most surface-water supplies were obtained from the many lakes in the county. Streams were rarely used because they usually go dry during droughts. Lake water was used mostly for agriculture, cooling, and recreation.
Some of the figures of water use for 1963 given in this report are considerably below the estimates for 1960 given in the Interim Report (Lichtler, Anderson, and Joyner, 1963, p. 45). The decrease is undoubtedly due to a refining of the estimates rather than an actual decrease. The use of water in 1963 was probably somewhat greater than in 1960.
GROUND WATER
Pumpage of ground water in Orange County is estimated to have averaged about 60 mgd in 1963. Of this total, about 39 mgd was pumped by municipal water systems. The largest user of ground water in. Orange County is the Orlando Utilities Commission which delivered an average of about 22 mgd in 1963 to users in and around Orlando. The city supplied water at a rate of about 1 mgd to the Martin Company which develops and manufactures missiles.
The City of Cocoa pumped an average of about 9.5 mgd from its well field in eastern Orange County in 1963. This well field supplies water to Cape Kennedy and Patrick Air Force Base in addition to supplying the Cities of Cocoa, Cocoa Beach, and Rockledge.
The City of Winter Park pumped an average of about 5 mgd in 1963, and eight other public water systems in Orange County including the Cities of Maitland, Winter Garden, Apopka, and Ocoee pumped a total of about 2.5 mgd.
The 79 privately-owned water systems in Orange County pumped about 3.3 mgd in 1963.
Self-supplied industrial water in Orange County in 1963 was determined in a study by the Florida Division of Water Resources