Dells Manor, located in Sauk County, Wisconsin, is a privately-owned dam with the primary purpose of recreation.
Wind
Humidity
Originally completed in 1929, this gravity dam stands at 24 feet tall with a hydraulic height of 16 feet. The dam has a normal storage capacity of 258 acre-feet and a maximum storage of 460 acre-feet, serving as a picturesque spot for water enthusiasts to enjoy activities on Dell Lake, also known as Lake Blass.
Managed by the Wisconsin Department of Natural Resources, Dells Manor is regulated, inspected, and enforced upon to ensure its safety and functionality. Despite its fair condition assessment, the dam poses a low hazard potential and has a very high risk rating of 1. Spring Brook, the river or stream it controls, has a drainage area of 6 square miles and can discharge up to 1500 cubic feet per second. With its controlled spillway and a surface area of 34 acres, Dells Manor remains a popular destination for visitors seeking outdoor recreation and water-based activities.
Although no major modifications have been reported in recent years, Dells Manor continues to be monitored with an inspection frequency of 10 years. The dam's emergency action plan (EAP) status is currently unknown, and there are no inundation maps prepared. As water resource and climate enthusiasts explore the beauty of Dells Manor and its surrounding area, they can appreciate the careful management and regulatory oversight that ensure both safety and enjoyment for all who visit this iconic site in Lake Delton.
Year Completed |
1929 |
Dam Length |
100 |
Dam Height |
24 |
River Or Stream |
SPRING BROOK |
Primary Dam Type |
Gravity |
Surface Area |
34 |
Hydraulic Height |
16 |
Drainage Area |
6 |
Nid Storage |
460 |
Structural Height |
24 |
Hazard Potential |
Low |
Nid Height |
24 |