Dam Report

Fort Knox Tailings Dam dam

Alaska, USA Fish Creek Hazard Significant
Today high
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Tonight low
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Dam height
350ft
Hazard rating
Significant
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Fort Knox Tailings Dam -- None dam
Fort Knox Tailings Dam None · Fish Creek
About this dam

Fort Knox Tailings Dam

The Fort Knox Tailings Dam in Chatineka, Alaska, is a rockfill dam designed by Knight Piesold in 1996 primarily for water supply purposes. With a height of 350 feet and a length of 4415 feet, this dam has a storage capacity of 136,000 acre-feet and serves as a critical structure for managing tailings and water resources in the area. Located on Fish Creek in Fairbanks North Star County, this dam is regulated by the Alaska Department of Natural Resources and is inspected regularly by the Mine Safety and Health Administration.

Despite being classified as having a "significant" hazard potential and a "high" risk assessment, the Fort Knox Tailings Dam is currently in fair condition as of the last assessment in January 2019. The dam has undergone modifications in 2011 to enhance its structural integrity, and emergency action plans are in place to mitigate any potential risks associated with its operation. With no spillway and a hydraulic height of 335 feet, this dam plays a crucial role in ensuring water supply and managing tailings in the region, highlighting the importance of effective monitoring and maintenance practices to safeguard both the environment and surrounding communities.

StateNone
River / streamFish Creek
NID IDAK00212
Owner typePrivate
Primary purposeWater Supply
Dam typeRockfill
Year built1996
Dam height350 ft
Dam length4,415 ft
Max storage136,000 AF
Normal storage132,200 AF
Surface area950.0 ac
Drainage area7.3 sq mi
Hazard potentialSignificant
ConditionFair
Last inspectionWed, 11 Jul 2018 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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Track Fort Knox Tailings Dam in the Snoflo app

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FAQ

About Fort Knox Tailings Dam

Where does the data for Fort Knox Tailings 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 Significant 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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Manage alerts in the Snoflo app

Custom alerts are configured in the iOS app -- favorite this dam, set a threshold, and you'll get a push the moment conditions cross.

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