Allison Lake Dam dam
Allison Lake Dam
Allison Lake Dam, located in Navarro, Texas, was completed in 1962 and serves multiple purposes including fire protection, stock, and small fish pond. The dam is a private structure, with a primary owner classified as private. It is an earth dam with a structural height of 13 feet and a length of 600 feet, holding a maximum storage capacity of 96 acre-feet.
Situated on the TR-Briar Creek, the dam has a high hazard potential and is rated as having a high risk level. Despite being state-permitted and inspected, the dam is not state-regulated or enforced. With no spillway and limited outlet gates, the dam's condition assessment is not rated, and emergency action plans are not readily available. The risk management measures for the dam are not specified, highlighting the need for increased monitoring and maintenance to ensure the safety of the surrounding area and the water resources it protects.
For water resource and climate enthusiasts, the Allison Lake Dam presents an intriguing case study of a privately-owned structure with multiple functions beyond water retention. The dam's location in Texas, its design specifications, and its maintenance and risk assessment challenges provide valuable insights into the complexities of managing water resources in a changing climate. The high hazard potential and risk level underscore the importance of proactive measures to address potential vulnerabilities and ensure the dam's long-term safety and effectiveness in protecting the community and 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 Allison Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Chambers Ck Nr Rice | 18 cfs | → |
| Waxahachie Ck Nr Bardwell | 1 cfs | → |
| Chambers Ck At Fm 55 Nr Avalon | 7 cfs | → |
| Trinity Rv At W Cedar Creek Pkwy Nr Dosser | 2,950 cfs | → |
| Richland Ck Nr Dawson | 0 cfs | → |
| Trinity Rv Nr Rosser | 3,400 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Allison Lake Dam.
Boat launches
- Beach Road, Ennis
- Ellis County
- Beach Road Ennis
- High View Marina Road, Ennis
- Old Park Road Ellis County
- Northwest 3360 Road, Frost
Campgrounds
- Mott - Bardwell Lake
- Highview - Bardwell Lake
- Waxahachie - Bardwell Lake
- Oak Park - Navarro Mills Reservoir
- Wolf Creek - Navarro Mills Reservoir
- Liberty Hill - Navarro Mills Reservoir
Track Allison 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 Allison Lake Dam
Where does the data for Allison 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 Allison Lake Dam.