Dam Report

Grama Dam dam

Oklahoma, USA Deer Creek Hazard High
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Dam height
43ft
Hazard rating
High
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Grama Dam  -- None dam
Grama Dam None · Deer Creek
About this dam

Grama Dam

Grama Dam, located in Cache, Oklahoma, is a federal-owned structure managed by the Fish and Wildlife Service for the primary purpose of serving as a Fish and Wildlife Pond. The dam, completed in 1936, stands at a height of 43 feet and has a hydraulic height of 44 feet, with a total length of 1044 feet. It has a storage capacity of 2179 acre-feet and covers a surface area of 67.95 acres, making it an important resource for fire protection, stock, and small fish ponds in addition to its primary function.

The dam's construction was overseen by GEI Consultants, Inc. and the U.S. Department of Agriculture, with maintenance and operations currently handled by the Fish and Wildlife Service. Despite being classified as having a high hazard potential, Grama Dam is deemed to be in fair condition as of the last assessment in June 2015. The dam's outlet gates are equipped with slide (sluice) gates, and it has undergone modifications in 2000 to enhance its hydraulic and mechanical systems.

With a drainage area of 3.04 square miles and a maximum discharge capacity of 4760 cubic feet per second, Grama Dam plays a crucial role in managing water resources in the region. Its location on DEER CREEK ensures the provision of essential water supply for wildlife while serving multiple purposes for the community. The dam's history, design, and operational features make it a significant asset for water resource and climate enthusiasts interested in the sustainable management of water infrastructure.

StateNone
River / streamDeer Creek
NID IDOK02505
Owner typeFederal
Primary purposeFish And Wildlife Pond
Dam typeEarth
Year built1936
Dam height43 ft
Dam length1,044 ft
Max storage2,179 AF
Normal storage686 AF
Surface area68.0 ac
Drainage area3.0 sq mi
Hazard potentialHigh
ConditionFair
Last inspectionMon, 15 Jun 2015 00:00:00 GMT

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.
Detailed forecast

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.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

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.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Grama Dam -- inflows here typically show up in storage 24-72 hours later.

Track Grama 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.

FAQ

About Grama Dam

Where does the data for Grama 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 High 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.