Dam Report

George Rist dam

Colorado, USA Big Thompson River-Tr Hazard Significant
Today high
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Tonight low
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Dam height
17ft
Hazard rating
Significant
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George Rist -- None dam
George Rist None · Big Thompson River-Tr
About this dam

George Rist

George Rist, also known as Buckingham Lake, is a significant earth dam located in Larimer, Colorado, primarily used for irrigation purposes. Completed in 1973, this dam has a height of 17 feet and a storage capacity of 561 acre-feet, with a surface area of 44 acres. The dam is situated on the Big Thompson River-TR, under the jurisdiction of the Colorado Department of Water Resources.

The dam has a spillway type of uncontrolled with a width of 15 feet and a maximum discharge of 31 cubic feet per second. It has undergone modifications in 2001 for both hydraulic and structural improvements. The hazard potential of George Rist is deemed significant, with a condition assessment reported as satisfactory during the last inspection in July 2019. While the risk assessment is categorized as moderate, there is no Emergency Action Plan (EAP) in place as of the latest data update in March 2021.

With its rich history and vital role in local irrigation, George Rist stands as a noteworthy water resource structure in the region. Its design by SMITH GEOTECHNICAL and unknown designers showcases the collaborative effort in ensuring water management and safety. As water resource and climate enthusiasts, understanding the intricacies of dams like George Rist provides a deeper appreciation for the crucial role they play in sustaining communities and ecosystems in Colorado.

StateNone
River / streamBig Thompson River-Tr
NID IDCO01192
Owner typeLocal Government
Primary purposeIrrigation
Dam typeEarth
Year built1973
Dam height17 ft
Dam length1,000 ft
Max storage561 AF
Normal storage337 AF
Surface area44.0 ac
Hazard potentialSignificant
ConditionSatisfactory
Last inspectionWed, 03 Jul 2019 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 George Rist -- inflows here typically show up in storage 24-72 hours later.

Track George Rist in the Snoflo app

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FAQ

About George Rist

Where does the data for George Rist 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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