Annin Lake Dam dam
Annin Lake Dam
Located in Jack, Texas, Annin Lake Dam is a private-owned structure built in 1961 with a primary purpose of serving as an earth dam on Beans Creek. Standing at 25 feet tall and spanning a length of 575 feet, this dam boasts a storage capacity of 223 acre-feet, making it a crucial component of water resource management in the area. Despite its high hazard potential, the dam's condition assessment remains unrated, highlighting the need for regular inspections and maintenance to ensure its continued safety and functionality.
Operated by the Fort Worth District of the US Army Corps of Engineers, Annin Lake Dam is an integral part of the local water infrastructure, providing essential water storage and flood control benefits to the surrounding community. With a maximum storage capacity of 223 acre-feet and a normal storage level of 73 acre-feet, the dam plays a significant role in managing water resources in the region. Despite lacking a spillway, the dam is equipped with one outlet gate to regulate water flow and maintain optimal storage levels.
While Annin Lake Dam's risk assessment is classified as high, with a hazard potential of 2 out of 3, the structure remains a vital asset for water management in the area. Although specific information on inspections and maintenance is not available, the dam's importance in providing water storage and flood control underscores the need for ongoing monitoring and upkeep to ensure its continued functionality and safety for both water resource and climate enthusiasts in the region.
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 Annin Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| W Fk Trinity Rv Nr Jacksboro | 8 cfs | → |
| Big Sandy Ck Nr Bridgeport | 1 cfs | → |
| Brazos Rv Nr Palo Pinto | 143 cfs | → |
| W Fk Trinity Rv Nr Boyd | 30 cfs | → |
| Walnut Ck At Reno | 0 cfs | → |
| Brazos Rv Nr Graford | 123 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Annin Lake Dam.
Boat launches
Campgrounds
Track Annin 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 Annin Lake Dam
Where does the data for Annin 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 Annin Lake Dam.