Dam Report

Oknoname 111027 dam

Oklahoma, USA Tr-Coal Creek Hazard Low
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Tonight low
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Dam height
21ft
Hazard rating
Low
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Oknoname 111027 -- None dam
Oknoname 111027 None · Tr-Coal Creek
About this dam

Oknoname 111027

Oknoname 111027 is a privately owned dam located in Okmulgee County, Oklahoma, near the city of Blad Hill. It stands at a height of 21 feet and has a length of 310 feet, with a primary purpose classified as "Other". The dam, completed in 1950, is an earth dam with a stone core and soil foundation, serving as a structure on TR-Coal Creek.

The dam has a storage capacity of 50 acre-feet and a maximum discharge of 1170 cubic feet per second. It features a controlled spillway with a width of 1 foot and one valve outlet gate. Despite being classified as having a low hazard potential, the dam is deemed to have a very high risk due to unspecified factors (Risk Assessment: Very High). The last inspection conducted in 2011 rated the dam's condition as "Not Rated".

The dam is under the jurisdiction of the Oklahoma Water Resources Board (OWRB), with state-regulated permitting, inspection, and enforcement in place. Although the risk level is high, there is currently no Emergency Action Plan (EAP) prepared, and the dam does not meet EAP guidelines. With a unique history and characteristics, Oknoname 111027 presents an intriguing case study for water resource and climate enthusiasts interested in dam infrastructure and risk management.

StateNone
River / streamTr-Coal Creek
NID IDOK12290
Owner typePrivate
Primary purposeOther
Dam typeEarth
Year built1950
Dam height21 ft
Dam length310 ft
Max storage50 AF
Normal storage30 AF
Surface area3.0 ac
Hazard potentialLow
ConditionNot Rated
Last inspectionWed, 17 Aug 2011 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 Oknoname 111027 -- inflows here typically show up in storage 24-72 hours later.

Track Oknoname 111027 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 Oknoname 111027

Where does the data for Oknoname 111027 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.

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