Dam Report

Carry Falls Dike A dam

New York, USA Raquette River Hazard Significant
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Dam height
17ft
Hazard rating
Significant
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Carry Falls Dike A                                                -- None dam
Carry Falls Dike A None · Raquette River
About this dam

Carry Falls Dike A

Carry Falls Dike A, located in St. Lawrence, New York, is a privately owned structure built in 1953 for hydroelectric purposes on the Raquette River. The dam stands at a height of 17 feet and spans 410 feet in length, with a storage capacity of 104,463 acre-feet. Despite being regulated by the Federal Energy Regulatory Commission, the dam is not state-permitted or enforced, making it a unique case in water resource management.

With a significant hazard potential and a high risk assessment rating, Carry Falls Dike A poses a potential threat to the surrounding area in the event of a breach or emergency situation. Despite lacking a formal condition assessment, the dam is subject to regular inspections by the Federal Energy Regulatory Commission, with the last one conducted in January 2021. While the dam does not have a spillway or outlet gates, it remains a critical piece of infrastructure for both hydroelectric generation and recreational use in the region.

As water resource and climate enthusiasts, understanding the intricate details of structures like Carry Falls Dike A can provide valuable insights into the challenges and opportunities in managing our water resources sustainably. With its historical significance and functional importance, this dam serves as a reminder of the delicate balance between harnessing natural resources for energy production and ensuring the safety and well-being of surrounding communities.

StateNone
River / streamRaquette River
NID IDNY00261
Owner typePrivate
Primary purposeHydroelectric
Dam typeEarth
Year built1953
Dam height17 ft
Dam length410 ft
Max storage104,463 AF
Normal storage104,463 AF
Surface area3,000.0 ac
Drainage area877.0 sq mi
Hazard potentialSignificant
ConditionNot Available
Last inspectionFri, 01 Jan 2021 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 Carry Falls Dike A -- inflows here typically show up in storage 24-72 hours later.

Track Carry Falls Dike A 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 Carry Falls Dike A

Where does the data for Carry Falls Dike A 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.