First, San Angelo's main water source is lake O.H. Ivie, which is located about 50 or more miles east of Angelo. O.H. Ivie is fed by the Colorado River and the Concho River. Since the three Concho Rivers converge in San Angelo where they become the Concho, that means that much of the water from the Concho that pours into O.H. Ivie comes first through San Angelo.
|Map showing area lakes. O.C. Fisher is to the northwest, Lake Nasworthy to the southwest, and Twin Buttes just west of Nasworthy. To the east is the largest of our area lakes, O.H. Ivie.|
From last Friday through Monday nights, I recorded right at 8 inches of rain at my house. Mathis Field, our regional airport located just east of Lake Nasworthy, recorded 7.42 inches during the same period. We had a good few days of rain.
By now, most of the rain has found it's way to the lake where it will end up. Here are the results of our rains. Note the chart shows the level of each lake both before AND after the recent rains so you can see just how significant the increase has been for us. These rains will buy us several months of life.
You can see that Ivie almost doubled both in capacity and acre-feet, and I expect that it will increase just a bit more in the next day or so. The other lakes should not change much. At one point following the rains, Nasworthy was actually at 102% capacity, but water was released down river to Ivie.