Mahoney South Lake Dam dam
Mahoney South Lake Dam
Mahoney South Lake Dam, located in Waco, Texas, was completed in 1965 and serves as a crucial water resource for the surrounding area. With a height of 24 feet and a length of 682 feet, this earth dam on TR-Eagle Creek provides a storage capacity of 88 acre-feet, primarily for recreational purposes. Despite its importance, the dam is currently in poor condition, as indicated by a 2016 assessment, posing a moderate risk according to the hazard potential rating.
Managed by local government authorities and regulated by the Texas Commission on Environmental Quality (TCEQ), Mahoney South Lake Dam is subject to regular inspections and enforcement measures to ensure its safety and functionality. The dam features an uncontrolled spillway and one outlet gate, with a design that includes buttress core types and an unknown foundation. While the dam has not undergone significant modifications in recent years, its inspection frequency of every two years reflects ongoing efforts to monitor and address any potential risks or issues.
For water resource and climate enthusiasts, Mahoney South Lake Dam offers an intriguing case study in the management and maintenance of essential infrastructure. As concerns over aging dams and their potential hazards continue to grow, the condition and risk assessment of this dam serve as a reminder of the importance of proactive monitoring and intervention to safeguard water resources and communities 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 Mahoney South Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Brazos Rv Nr Aquilla | 90 cfs | → |
| Hog Ck Nr Crawford | 15 cfs | → |
| N Bosque Rv At Valley Mills | 41 cfs | → |
| Middle Bosque Rv Nr Mcgregor | 54 cfs | → |
| Aquilla Ck Abv Aquilla | 1 cfs | → |
| Brazos Rv At Waco | 292 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mahoney South Lake Dam.
Track Mahoney South 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 Mahoney South Lake Dam
Where does the data for Mahoney South 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 Mahoney South Lake Dam.