Dam Report

Upper North Tisdale No. 1 dam

Wyoming, USA Nettie Draw Hazard Low
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Dam height
17ft
Hazard rating
Low
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Upper North Tisdale No. 1 -- None dam
Upper North Tisdale No. 1 None · Nettie Draw
About this dam

Upper North Tisdale No. 1

Upper North Tisdale No. 1 is a privately owned dam located in Campbell, Wyoming, near the Caballo Coal Mine. Built in 1999, this earth dam stands at 17 feet tall and has a hydraulic height of 12 feet, serving primarily as a flood risk reduction structure along the Nettie Draw river. With a storage capacity of 271 acre-feet and a drainage area of 3.6 square miles, this dam plays a crucial role in protecting the surrounding area from potential flooding events.

Despite its low hazard potential and fair condition assessment, Upper North Tisdale No. 1 is subject to state regulation, inspection, and enforcement to ensure its continued safety and functionality. The dam features an uncontrolled spillway and a slide gate outlet, with a maximum discharge capacity of 8030 cubic feet per second. The surrounding community benefits from the moderate risk reduction measures in place, supported by regular inspections and a comprehensive emergency action plan to address any potential threats to the dam's integrity.

Overall, Upper North Tisdale No. 1 serves as a vital infrastructure asset for flood control in the region, with a focus on maintaining its effectiveness and safety for the community. Water resource and climate enthusiasts can appreciate the engineering and management efforts put into this dam to mitigate flood risks and protect the local environment and residents from potential harm.

StateNone
River / streamNettie Draw
NID IDWY02226
Owner typePrivate
Primary purposeFlood Risk Reduction
Dam typeEarth
Year built1999
Dam height17 ft
Dam length1,969 ft
Max storage271 AF
Normal storage228 AF
Surface area63.0 ac
Drainage area3.6 sq mi
Hazard potentialLow
ConditionFair
Last inspectionWed, 07 Aug 2019 12:00:00 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 Upper North Tisdale No. 1 -- 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 Upper North Tisdale No. 1.

Track Upper North Tisdale No. 1 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 Upper North Tisdale No. 1

Where does the data for Upper North Tisdale No. 1 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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Snoflo-tracked reservoirs and dams within driving distance of Upper North Tisdale No. 1.