Hegar Lake Dam dam
Hegar Lake Dam
Hegar Lake Dam, located in Harris County, Texas, is a privately owned structure primarily used for irrigation purposes. Completed in 1970, this earth dam stands at a height of 8 feet and spans a length of 12,600 feet, with a storage capacity of 960 acre-feet. The dam, constructed with a buttress core type, is regulated and inspected by the Texas Commission on Environmental Quality (TCEQ) to ensure its safety and compliance with state regulations.
With a hazard potential of "Not Available" and a risk assessment rating of "High (2)", Hegar Lake Dam poses potential risks that are yet to be fully evaluated. The dam does not have a spillway and features one outlet gate. While the condition of the dam has not been officially rated, it is subject to periodic inspections to monitor its structural integrity and overall safety. The risk management measures and emergency preparedness plans for this dam are currently not available, indicating the need for further assessment and planning to mitigate potential risks associated with the structure.
Water resource and climate enthusiasts interested in the Hegar Lake Dam can appreciate its significance in providing irrigation water to the surrounding area. As a critical infrastructure in water management, the dam plays a vital role in supporting agricultural activities and maintaining water resources in the region. However, its high-risk potential underscores the importance of continued monitoring, assessment, and potential improvements to ensure the safety and resilience of the dam in the face of changing climate conditions and water resource management challenges.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Hegar Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Cypress Ck At House-Hahl Rd Nr Cypress | 371 cfs | → |
| Cypress Ck At Katy-Hockley Rd Nr Hockley | 53 cfs | → |
| Langham Ck At W Little York Rd Nr Addicks | 285 cfs | → |
| Bear Ck Nr Barker | 230 cfs | → |
| S Mayde Ck At Heathergold Dr Nr Addicks | 580 cfs | → |
| Little Cypress Ck Nr Cypress | 110 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Hegar Lake Dam.
Boat launches
- Woodway Drive Houston
- Edgewater Drive 32210, Montgomery County
- Meadowlark Lane 1105, Sugar Land
- Boat Launch The Woodlands
- Lake Woodlands Drive The Woodlands
- Highway 159 East 11980, Bellville
Track Hegar Lake Dam in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Hegar Lake Dam
Where does the data for Hegar Lake Dam come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Not Available hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Hegar Lake Dam.