Good evening from the Lake Houston area. There are no flood watches, flood warnings or flash flood warnings in effect for Harris, Montgomery or Liberty counties this evening. Both Lake Houston and Lake Conroe are sitting in their normal range and easing slowly downward. The one active advisory for Harris County is an air quality alert, covered below.
Lake Levels at a Glance
| Lake | Level | Percent Full | Reading |
|---|---|---|---|
| Lake Houston | 42.27 feet | 99.1 percent | 5:30 p.m. Central, Friday, September 25 |
| Lake Conroe | 199.66 feet | 93.7 percent | Daily value, Friday, September 25 |
Lake Houston
The United States Geological Survey gauge at Lk Houston nr Sheldon, TX, site number 08072000, read 42.27 feet at 5:30 p.m. Central on Friday, September 25. Over the previous 48 hours the lake moved between 42.23 feet, recorded at 2:30 p.m. Friday, and 42.32 feet, recorded at 9:30 p.m. Wednesday. That is a spread of nine hundredths of a foot across 190 readings, which is a flat two days on the gauge.
The Texas Water Development Board put Lake Houston at 42.27 feet and 99.1 percent full for Friday, matching the USGS elevation exactly. The lake has given up about four hundredths of a foot since Wednesday.
Lake Conroe
The Texas Water Development Board listed Lake Conroe at 199.66 feet and 93.7 percent full in its daily value for Friday, September 25, down two hundredths of a foot from 199.68 feet on Thursday. The lake has declined every day for more than a week.
Lake Conroe matters in a Lake Houston paper because San Jacinto River Authority releases from Conroe flow down the West Fork of the San Jacinto River into Lake Houston. The upstream level is part of the local flooding picture in Kingwood, Humble and Atascocita, which is why this newspaper carries it every day alongside the Lake Houston gauge.
The Forecast
Tonight: Partly cloudy, with a low around 70. Northeast wind 0 to 5 mph. Chance of precipitation 0 percent. The National Weather Service published no heat index value for this period.
Saturday: Partly sunny, with a high near 91 and temperatures falling to around 88 in the afternoon. Northeast wind 0 to 5 mph. Chance of precipitation 2 percent.
Saturday night: Partly cloudy, with a low around 72. East wind 0 to 5 mph. Chance of precipitation 0 percent.
Active Alerts
No flood watches, flood warnings or flash flood warnings are active for Harris, Montgomery or Liberty counties.
The National Weather Service office in Houston and Galveston has an air quality alert in effect for Harris County. The Texas Commission on Environmental Quality has declared an Ozone Action Day for the Houston, Galveston and Brazoria area for Saturday, September 26, because conditions are expected to favor high ozone levels. That alert was issued at 3:48 p.m. Friday and runs through 7 p.m. Saturday. A separate Ozone Action Day covering Friday expires at 7 p.m. this evening. No alerts of any kind are active for Montgomery or Liberty counties.
Sources
Lake Houston elevation from the United States Geological Survey, gauge 08072000. Reservoir storage and percent full from the Texas Water Development Board. Forecast and alerts from the National Weather Service Houston/Galveston office. Gauge readings are provisional and subject to revision by the USGS.
