Griffin Lloyd M dam
Griffin Lloyd M
Griffin Lloyd M is a privately owned earth dam located in McCurtain, Oklahoma, near Mable Springs School. Completed in 1950, this dam stands at a height of 20 feet with a hydraulic height of 16 feet and a length of 500 feet. It serves as a vital structure for water resource management, with a storage capacity of 132 acre-feet and a maximum discharge rate of 992 cubic feet per second.
Despite being categorized as low-hazard potential, Griffin Lloyd M poses a very high risk, making it essential for regular inspections and maintenance. The dam features a controlled spillway with a width of 1 foot and a single valve outlet gate for water control. While the condition assessment is currently not rated, the dam is under the regulatory oversight of the Oklahoma Water Resources Board.
For water resource and climate enthusiasts, Griffin Lloyd M offers a fascinating glimpse into the intersection of infrastructure, environmental management, and risk assessment. Its historical significance as a critical water management structure in rural Oklahoma underscores the importance of sustainable practices and proactive measures to ensure the safety and resilience of our water resources in the face of changing climate patterns.
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 Griffin Lloyd M -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little River Blw Lukfata Creek | 5,190 cfs | → |
| Glover River Near Glover | 2,030 cfs | → |
| Red River Near De Kalb | 2,720 cfs | → |
| Mountain Fork Near Eagletown | 256 cfs | → |
| Cuthand Ck At Fm 910 Nr Cuthand | 131 cfs | → |
| Little River Near Horatio | 5,170 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Griffin Lloyd M.
Boat launches
Campgrounds
- Pine Creek Cove - Pine Creek Lake
- Raymond Gary State Park
- Beavers Bend State Park
- Hochatown State Park
- Little River - Pine Creek Lake
- Lost Rapids - Pine Creek Lake
Fishing spots
Track Griffin Lloyd M 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 Griffin Lloyd M
Where does the data for Griffin Lloyd M 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 Griffin Lloyd M.