Dam Report

Angostnot Rateda Grazing Pond 2 dam

South Dakota, USA Tributary White River Hazard Low
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Dam height
23ft
Hazard rating
Low
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Angostnot Rateda Grazing Pond 2 -- None dam
Angostnot Rateda Grazing Pond 2 None · Tributary White River
About this dam

Angostnot Rateda Grazing Pond 2

Angostnot Rateda Grazing Pond 2, located in Fall River, South Dakota, is a privately owned earth dam originally completed in 1968. With a dam height of 23 feet and a storage capacity of 184 acre-feet, this structure plays a crucial role in managing water resources in the area. The pond is situated along a tributary of the White River and is regulated by the South Dakota Department of Environment and Natural Resources (DENR), with state permitting, inspection, and enforcement in place to ensure its safety and effectiveness.

Despite being labeled as "Not Rated" in terms of condition assessment, Angostnot Rateda Grazing Pond 2 has a low hazard potential and is designed to withstand potential risks. The structure has a maximum discharge capacity of 1650 cubic feet per second, providing vital flood control benefits to the surrounding area. While specific details such as spillway type and outlet gates are not provided, the pond serves as a valuable asset for water supply, irrigation, and wildlife habitat conservation in the region.

Managed by a private owner, Angostnot Rateda Grazing Pond 2 operates within state jurisdiction and complies with regulatory standards set by the DENR. With its strategic location and storage capacity, this pond contributes to the sustainable management of water resources and climate resilience in Fall River, South Dakota. As water resource and climate enthusiasts, understanding the significance of structures like Angostnot Rateda Grazing Pond 2 sheds light on the intricate balance between human development and environmental stewardship.

StateNone
River / streamTributary White River
NID IDSD01169
Owner typePrivate
Dam typeEarth
Year built1968
Dam height23 ft
Dam length550 ft
Max storage184 AF
Normal storage122 AF
Hazard potentialLow
ConditionNot Rated

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 Angostnot Rateda Grazing Pond 2 -- inflows here typically show up in storage 24-72 hours later.

Track Angostnot Rateda Grazing Pond 2 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 Angostnot Rateda Grazing Pond 2

Where does the data for Angostnot Rateda Grazing Pond 2 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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