Peter Mulhearn Dam dam
Peter Mulhearn Dam
Peter Mulhearn Dam, located in Guyton, Louisiana, is a private-owned structure built for recreational purposes along the TR-Guyton Creek. This Earth-type dam stands at a height of 9 feet and spans 385 feet in length, with a storage capacity of 60.8 acre-feet. Despite its relatively low hazard potential and fair condition assessment, the dam is regulated and inspected by the Louisiana Department of Transportation and Development to ensure its safety and compliance with state standards.
The dam features an uncontrolled spillway and is surrounded by a surface area of 6.76 acres, offering opportunities for outdoor activities and water recreation in the Ouachita County region. While the structure has not undergone recent modifications or improvements, regular inspections are conducted every five years to monitor its integrity and assess any potential risks. With its moderate risk assessment rating and the presence of emergency protocols, Peter Mulhearn Dam serves as both a functional water resource and a scenic attraction for visitors to enjoy in a tranquil natural setting.
Overall, Peter Mulhearn Dam is a vital part of the local water infrastructure, providing both recreational benefits and essential flood control measures along the TR-Guyton Creek. Its presence enhances the environmental and social landscape of the area, offering a peaceful retreat for water resource and climate enthusiasts to appreciate and explore. As a regulated and maintained structure, the dam ensures the safety and well-being of the surrounding community while preserving the natural beauty of Ouachita, Louisiana.
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 Peter Mulhearn Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Bayou Lafourche Near Crew Lake | 2,290 cfs | → |
| Boeuf River Nr Girard | 203 cfs | → |
| Dugdemona River Near Joyce | 36 cfs | → |
| Saline Bayou Near Lucky | 296 cfs | → |
| Little Corney Bayou Near Lillie | 246 cfs | → |
| Little River Near Rochelle | 412 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Peter Mulhearn Dam.
Track Peter Mulhearn 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 Peter Mulhearn Dam
Where does the data for Peter Mulhearn 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 Low 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 Peter Mulhearn Dam.