Grandy

About Grandy

The primary purpose of Grandy is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Mike Houck, Todd Dewitt (private). It impounds the Little Warm Springs Creek-off near Dubois.

The dam stands 18 feet tall and stretches 480 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 126 acre-feet, and collects water from a drainage area of 9 square miles. Completed in 1957, the structure is well into its service life at over 50 years old.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 05/17/2023.

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