Gross Lake Dam dam
Gross Lake Dam
Gross Lake Dam, located in Erath, Texas, is a private earth dam constructed in 1950 for the primary purpose of water supply. Standing at a height of 30 feet with a length of 1450 feet, the dam holds a storage capacity of 526 acre-feet, with a normal storage level of 367 acre-feet. The dam is situated on Sycamore Creek and is regulated by the Texas Commission on Environmental Quality (TCEQ).
Despite being last inspected in 1981, the dam is considered to have a moderate risk level (3) and is currently not rated for its condition assessment. The spillway, which is uncontrolled and 450 feet wide, offers a safeguard against potential overflow events. With an outlet consisting of one slide gate and three uncontrolled gates, the dam's operational capacity remains intact for water control and management. The dam's presence is crucial for maintaining water resources in the region, highlighting its importance in water supply infrastructure.
For water resource and climate enthusiasts, Gross Lake Dam serves as a key structure in the water management system of Erath, Texas. Its historical significance as a water supply source, coupled with its moderate risk level and regulatory oversight by the TCEQ, makes it an essential component of the region's water infrastructure. As efforts continue to assess and manage the dam's condition and risk level, its role in sustaining water resources underscores the importance of maintaining and monitoring such vital structures for the benefit of the community and the environment.
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 Gross Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| N Bosque Rv At Hico | 8 cfs | → |
| Paluxy Rv At Glen Rose | 6 cfs | → |
| Brazos Rv Nr Glen Rose | 385 cfs | → |
| Leon Rv Nr De Leon | 4 cfs | → |
| Brazos Rv Ds Lk Granbury Nr Granbury | 359 cfs | → |
| Leon Rv Nr Hasse | 6 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Gross Lake Dam.
Boat launches
- Coates Road 2200, Granbury
- East State Loop 426 621, Granbury
- North Lipan Drive 2301-2303, Granbury
- Us 67 Somervell County
- Monticello Drive 8517, Granbury
- R 6 Comanche County
Campgrounds
- Stephenville City Park
- Dinosaur Valley State Park
- Hico City Park
- Dublin City Park
- Weiser Community Park
- Thorp Spring - Lake Granbury
Fishing spots
Track Gross 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 Gross Lake Dam
Where does the data for Gross 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 Gross Lake Dam.