Lake Houston
Lake Houston is managed by Coastal Water Authority / City of Houston. Lake Insights displays its latest available elevation from Texas Water Development Board. Published reference elevations are listed below.
Lake Status
1.45 feet below full pool
−1.45 ft vs full pool
- 7-day trend
- Falling
- 7-day change
- Down 0.05 ft
- 30-day change
- Down 0.05 ft
- Last updated
- 12 hours ago
Lake Houston is currently 1.45 feet below full pool and has fallen slightly over the past week. Readings show continued drawdown relative to full pool, with levels trending lower over the past week.
Watershed drought conditions
Harris County, TX · surrounding county from lake location
Abnormally Dry
The surrounding county is abnormally dry, which is not official drought.
Severity
Weekly trend
Stable
Compared with last week
Official drought
No
Current conditions are classified as Abnormally Dry (D0), which is not considered official drought.
U.S. Drought Monitor · map date Sep 8, 2026. Updated weekly. droughtmonitor.unl.eduView drought map for Harris County, TX
Key Facts
Managing authority
Waterbody / project type
Full pool
Datum
Current-level source
Why the level can change
General factors for reservoirs like this
These are common influences for this type of lake. They do not identify the cause of a specific current change unless an operator update confirms it.
Rainfall & inflows
Rain and upstream river inflows can raise reservoir levels, especially after storms.
Downstream releases
When an operator releases water through a dam, reservoir storage can fall and downstream flows can rise.
Flood-risk operations
Some projects store or release water under flood-risk rules when conditions require it.
Water supply
Some reservoirs support municipal, industrial, irrigation, or regional water-supply needs.
Hydropower
Hydropower projects may pass water through turbines when generating electricity.
Seasonal weather
Dry periods, heat, evaporation, and seasonal rainfall patterns can affect storage over weeks and months.
Published reference elevations
- Full pool
- 44.00 ft
Published reference elevation. Not necessarily a fixed year-round target for every project.
Current data source
Managing authority: Coastal Water Authority / City of Houston
Observation source used by Lake Insights: Texas Water Development Board
Who manages the lake and who publishes the reading Lake Insights displays can differ. Lake Insights does not invent a source label from the managing authority alone.
General education
Shared background — not lake-specific facts
Lake Insights aggregates water level information from authoritative public sources such as the U.S. Army Corps of Engineers, NOAA, TVA, Bureau of Reclamation, power utilities, and other official lake operators. We preserve historical observations, calculate trends, and present lake conditions in a consistent format. For Texas Water Development Board, we link to the official source whenever it is available. Lake Insights does not predict future lake levels unless an official forecast has been published by the managing authority.
Common questions about Lake Houston
- Who manages Lake Houston?
- Lake Houston is managed by Coastal Water Authority / City of Houston. Lake Insights reports published gauge readings; it does not operate the waterbody.
- What is full pool at Lake Houston?
- The published full-pool elevation for Lake Houston is 44.00 ft (NGVD29). Full pool is a published reference elevation — not a prediction of today’s level.
- Where does Lake Insights get the level reading for Lake Houston?
- Lake Insights displays the latest available elevation for Lake Houston from Texas Water Development Board. The managing authority (Coastal Water Authority / City of Houston) may differ from the agency that publishes the observation used on this page.
- What datum is used for Lake Houston?
- Elevations for Lake Houston are referenced to NGVD29 (MSL).