Dam Report

Glen Forney Dam dam

Nebraska, USA Tr-Larrabee Creek Hazard Low
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Tonight low
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Dam height
32ft
Hazard rating
Low
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Glen Forney Dam -- None dam
Glen Forney Dam None · Tr-Larrabee Creek
About this dam

Glen Forney Dam

Glen Forney Dam, located in Whiteclay, Nebraska, is a privately-owned earth dam designed by the USDA NRCS and completed in 1993. This dam, with a height of 32 feet and a length of 580 feet, serves multiple purposes including flood risk reduction and storage. With a normal storage capacity of 14 acre-feet and a maximum storage capacity of 117 acre-feet, the dam plays a crucial role in managing water resources in the area.

The dam, situated on TR-Larrabee Creek, is regulated by the Nebraska Department of Natural Resources and undergoes regular inspections to ensure its structural integrity. With a low hazard potential and a satisfactory condition assessment as of May 2020, Glen Forney Dam continues to provide essential water management services to the surrounding community. Despite its low hazard potential, the dam is equipped with emergency action plans and updated emergency contacts to mitigate any potential risks.

As part of the Omaha District, Glen Forney Dam contributes to the overall water infrastructure in the region, with a drainage area of 7.2 square miles and a maximum discharge capacity of 765 cubic feet per second. Its presence underscores the importance of sustainable water resource management and climate resilience in Nebraska, showcasing the collaboration between private owners and government agencies in safeguarding water supplies and reducing flood risks.

StateNone
River / streamTr-Larrabee Creek
NID IDNE02378
Owner typePrivate
Primary purposeOther
Dam typeEarth
Year built1993
Dam height32 ft
Dam length580 ft
Max storage117 AF
Normal storage14 AF
Surface area3.0 ac
Drainage area7.2 sq mi
Hazard potentialLow
ConditionSatisfactory
Last inspectionWed, 20 May 2020 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 Glen Forney Dam -- inflows here typically show up in storage 24-72 hours later.

Around the water

Make a day of it

Boat launches, lakeside camping, fishing access, and other reservoirs near Glen Forney Dam.

Track Glen Forney 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 Glen Forney Dam

Where does the data for Glen Forney 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.

More reservoirs

Other water bodies near here

Snoflo-tracked reservoirs and dams within driving distance of Glen Forney Dam.

{# FAVORITE-LIMIT MODAL — fires when a non-premium user hits the 3-favorite cap. Mirrors the iOS PremiumGateSheet's .bookmarkLimit case: same copy direction (limit reached → unlimited with Premium), same primary CTA shape. Triggered from toggle_fave (pre-flight) and the 403 error handler. #} {# Bootstrap's `.modal.fade` class sets opacity:0 and expects to be opened via jQuery's $.modal('show') which animates the opacity. Our showFavoriteLimitModal() just flips inline display, so Bootstrap's opacity rule would leave the popup invisible. Use a plain div with inline styles (same pattern as #sf-cp-alerts-modal) to sidestep Bootstrap entirely. #} {# ALERTS-IN-APP MODAL — opened from the Account dropdown's "Alerts" link. Push-notification alerts (snow / flow / buoy / ski) are managed in the iOS app because they require APNs + device tokens; the webapp has no equivalent surface, so the right thing to do is point users at the App Store. Mirrors the per-gauge #sf-cp-alerts-modal popup on recChildFlow.html. #}