Summary

The lake was created in the 1960s by damming Chapman Creek, and it covers 630 acres with a maximum depth of 44 feet. The hydrology of the lake is influenced by precipitation, runoff, and groundwater, and specific surface flow is provided by Chapman Creek. Snowpack also contributes to the water levels in the lake during the winter months. The lake is used for a variety of recreational activities such as fishing, boating, and swimming. Agriculture also contributes to the lake's water quality, as runoff from nearby farms can affect the lake's nutrient levels. The lake is managed by the Big Chapman Lake Property Owners Association, which oversees water quality and safety measures.

Regional Streamflow Levels

Tippecanoe River At Oswego 202.0cfs	202cfs
Tippecanoe River At North Webster 74.6cfs	75cfs
Eel River At North Manchester 574.0cfs	574cfs
Nb Elkhart River At Cosperville 303.0cfs	303cfs
Elkhart River At Goshen 921.0cfs	921cfs
Yellow River At Plymouth 361.0cfs	361cfs

15-Day Long Term Forecast

Reservoir Details

Gage Height, Ft 24hr Change	0.13%
Percent of Normal	96%
Minimum	6.94 ft 2012-10-13
Maximum	9.23 ft 2009-03-11
Average	8 ft

Seasonal Comparison

Gage Height, Ft Levels

5-Day Hourly Forecast Detail

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. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
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. Investigations and studies are necessary.
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.
Not Available
Dams for which the condition assessment is restricted to approved government users.

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, environment 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.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.