Hydrologic data for Mountain Creek, Trinity River basin, Texas, 1975

Mountain Creek drains the northeast corner of Johnson County, the northwest corner of Ellis County, the southeast corner of Tarrant County, and part of the southwest corner of Dallas County, Tex. The basin is 30 miles long and averages 10 miles in width. The total drainage area at the mouth is 304 sq mi. Basin outflow for the 1975 water year was 146,400 acre-feet which is 68,880 acre-feet above the 15-year (1960-75) average of 77,520 acre-feet. Storage in Mountain Creek Lake showed a net loss of 150 acre-feet during the water year. Rainfall over the study area for the 1975 water year was about 39 inches, which is about 5 inches above the 15-year mean for the area. (Woodard-USGS)