Black Lake No 4 Dam dam
Black Lake No 4 Dam
Black Lake No 4 Dam, located in Hood, Texas, is a privately owned Earth dam completed in 1956 for water supply purposes. Standing at 28 feet high and 650 feet long, this dam on Robinson Creek has a storage capacity of 125 acre-feet, with a normal storage of 46 acre-feet. Despite its modest size and lack of a spillway, the dam is classified as having a high risk potential (2) due to unspecified factors, making it a point of interest for water resource and climate enthusiasts.
The dam has not been rated for its condition, and there is no information available on its inspection frequency or emergency action plan preparedness. The lack of detailed data on the dam's structure and maintenance may raise concerns among those who are interested in the safety and resilience of water infrastructure in the face of climate change and extreme weather events. Given its location in an area with a risk assessment of high, there is a need for further investigation and monitoring of Black Lake No 4 Dam to ensure its integrity and safety in the long run.
The dam's association with the Fort Worth District of the US Army Corps of Engineers, despite not being directly owned or funded by federal agencies, adds another layer of complexity to its oversight and management. The presence of only one outlet gate and the absence of a spillway raise questions about the dam's ability to handle excess water flow during heavy rainfall or flooding events. These factors make Black Lake No 4 Dam a notable site for research and discussion among water resource and climate enthusiasts seeking to understand the challenges and vulnerabilities of dams in the face of changing environmental conditions.
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 Black Lake No 4 Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Brazos Rv Nr Dennis | 370 cfs | → |
| Brazos Rv Ds Lk Granbury Nr Granbury | 365 cfs | → |
| Clear Fork Trinity Rv At Kelly Rd Nr Aledo | 4 cfs | → |
| Clear Fk Trinity Rv Nr Weatherford | 0 cfs | → |
| Brazos Rv Nr Glen Rose | 261 cfs | → |
| Paluxy Rv At Glen Rose | 7 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Black Lake No 4 Dam.
Boat launches
- Old Tin Top Road 1868-1998, Weatherford
- North Lipan Drive 2301-2303, Granbury
- East State Loop 426 621, Granbury
- Coates Road 2200, Granbury
- Monticello Drive 8517, Granbury
- Us 67 Somervell County
Campgrounds
- Thorp Spring - Lake Granbury
- Hunter Park - Lake Granbury
- Dinosaur Valley State Park
- Lake Mineral Wells State Park
- Live Oak
- Post Oak
Track Black Lake No 4 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 Black Lake No 4 Dam
Where does the data for Black Lake No 4 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 Black Lake No 4 Dam.