Comanche Harbor Lake Dam dam
Comanche Harbor Lake Dam
Comanche Harbor Lake Dam, located in Granbury, Texas, is a privately-owned structure with a primary purpose of recreation. Completed in 1975, this earth dam stands at a height of 37 feet and stretches 460 feet in length, creating a reservoir with a maximum storage capacity of 74 acre-feet. The dam is situated on the TR-Brazos River and is regulated by the Texas Commission on Environmental Quality (TCEQ), with state permitting, inspection, and enforcement in place to ensure its safety and compliance with regulations.
With an uncontrolled spillway and one outlet gate, Comanche Harbor Lake Dam has a moderate hazard potential and is rated as not available in terms of condition assessment. The emergency action plan was last revised in July 2012, and while no inundation maps have been prepared, the dam's risk assessment is categorized as moderate. The Fort Worth District of the US Army Corps of Engineers does not have jurisdiction over this dam, highlighting its status as a privately-owned and regulated structure within the state of Texas. For water resource and climate enthusiasts, Comanche Harbor Lake Dam serves as an intriguing example of a recreational earth dam blending into the natural landscape of Hood County.
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 Comanche Harbor Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Brazos Rv Ds Lk Granbury Nr Granbury | 365 cfs | → |
| Brazos Rv Nr Glen Rose | 261 cfs | → |
| Paluxy Rv At Glen Rose | 7 cfs | → |
| Brazos Rv Nr Dennis | 370 cfs | → |
| Clear Fork Trinity Rv At Kelly Rd Nr Aledo | 4 cfs | → |
| Clear Fk Trinity Rv Nr Weatherford | 0 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Comanche Harbor Lake Dam.
Boat launches
- East State Loop 426 621, Granbury
- North Lipan Drive 2301-2303, Granbury
- Coates Road 2200, Granbury
- Monticello Drive 8517, Granbury
- Us 67 Somervell County
- Old Tin Top Road 1868-1998, Weatherford
Campgrounds
- Hunter Park - Lake Granbury
- Thorp Spring - Lake Granbury
- Dinosaur Valley State Park
- Site: 001, Loop: Mustang Non Site Specific
- Site: Gs, Loop: Mustang Point
- Stephenville City Park
Fishing spots
Track Comanche Harbor 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 Comanche Harbor Lake Dam
Where does the data for Comanche Harbor 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 Comanche Harbor Lake Dam.