Dam Report

North Lansing Dam dam

Michigan, USA Grand River Hazard Significant
Today high
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Tonight low
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Dam height
20ft
Hazard rating
Significant
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North Lansing Dam -- None dam
North Lansing Dam None · Grand River
About this dam

North Lansing Dam

The North Lansing Dam, located on the Grand River in Lansing, Michigan, serves primarily for recreational purposes. Constructed in 1936, this gravity dam stands at a height of 20 feet and has a hydraulic height of 12 feet. With a length of 252 feet, it has a maximum storage capacity of 1810 acre-feet, with a normal storage level of 500 acre-feet. The dam also features a controlled spillway with a width of 233 feet, capable of handling a maximum discharge of 17,700 cubic feet per second.

Managed by a public utility, the North Lansing Dam is regulated by the Michigan Department of Environment, Great Lakes, and Energy (DEGLE). Despite being classified as having a significant hazard potential, the dam's condition was assessed as satisfactory during its last inspection in July 2017. The risk assessment for this structure is very high, with a DSAC assigned rating of 1. Emergency action plans and risk management measures for the dam are currently under review and development.

For water resource and climate enthusiasts, the North Lansing Dam presents an intriguing case study in the management of a vital water infrastructure within a populated urban area. With its rich history and continued importance for recreation and water storage, this dam serves as a focal point for understanding the complexities of balancing human needs with environmental considerations in the face of climate change and increasing water demands. As efforts to address the risks associated with the dam progress, its role in the local ecosystem and community resilience will undoubtedly continue to be a topic of interest and discussion among stakeholders.

StateNone
River / streamGrand River
NID IDMI00540
Owner typePublic Utility
Primary purposeRecreation
Dam typeGravity
Year built1936
Dam height20 ft
Dam length252 ft
Max storage1,810 AF
Normal storage500 AF
Surface area92.0 ac
Drainage area1,230.0 sq mi
Hazard potentialSignificant
ConditionSatisfactory
Last inspectionThu, 06 Jul 2017 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 North Lansing Dam -- inflows here typically show up in storage 24-72 hours later.

Track North Lansing Dam in the Snoflo app

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FAQ

About North Lansing Dam

Where does the data for North Lansing 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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