Mammoth Springs Dam 1 dam
Mammoth Springs Dam 1
Mammoth Springs Dam 1, also known as State Park Lake Dam, is a gravity dam located in Mammoth Springs, Arkansas, along the Spring River. Completed in 1885, this historic dam serves primarily for recreational purposes, offering a picturesque setting for outdoor enthusiasts to enjoy water activities. With a hydraulic height of 17 feet and a structural height of 20 feet, the dam has a storage capacity of 60 acre-feet, providing a serene escape for visitors to the area.
Situated in Fulton County, Arkansas, Mammoth Springs Dam 1 is owned and regulated by the state government, with no federal oversight. Despite its age, the dam has been assessed to have a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. With a maximum discharge of 6,500 cubic feet per second, the dam ensures the safety and stability of the surrounding area while maintaining its recreational value. The dam has not been modified in recent years, reflecting its enduring capability to meet the needs of the local community.
As a significant landmark in the region, Mammoth Springs Dam 1 stands as a testament to the enduring engineering feats of the past. With its tranquil waters and scenic surroundings, the dam continues to attract visitors seeking a peaceful retreat amidst the natural beauty of the Spring River. While its primary purpose is recreational, the dam also serves as a vital part of the local ecosystem, providing essential water storage and management for the area.
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 Mammoth Springs Dam 1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mammoth Spring At Mammoth Spring | 239 cfs | → |
| Spring River At Town Branch Bridge At Hardy | 377 cfs | → |
| Eleven Point River Near Bardley | 473 cfs | → |
| Elevenpoint River Near Ravenden Springs | 585 cfs | → |
| Spring River At Imboden | 436 cfs | → |
| Black River At Pocahontas | 2,850 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mammoth Springs Dam 1.
Boat launches
- Beach Road Hardy
- Highland Fun Park
- Sharp County
- Highway 142 River Access
- East Walnut Street Oregon County
- Thomasville River Access
Campgrounds
- Morgan Spring Float Camp
- Boze Mill Float Camp
- Greenbriar Float Camp
- Greer Crossing Recreation Area
- Greer Crossing
- Horseshoe Bend Float Camp
Fishing spots
Paddle runs
- Hebron Access Site To Southern Forest Boundary In Sec 33, T24n, R11w
- Western Edge Of Ozark National Scenic Riverways To Confluence With Alley Spring (Branch)
- The Most Upstream Portion Of Ozark National Scenic Riverways To The Most Downstream Portion Of Ozark National Scenic Riverways
- Confluence With Alley Spring (Branch) To Confluence With Current River (Does Not Include River Segment In Gap Between Parkland Units)
Track Mammoth Springs Dam 1 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 Mammoth Springs Dam 1
Where does the data for Mammoth Springs Dam 1 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 Mammoth Springs Dam 1.