Williston Mill Dam (md 617 Old Harmony Road)

Low HazardSatisfactory ConditionEmergency Action Plan: No

Location

StateMaryland
CountyCaroline
Nearest CityWilliston
River/StreamMill Creek
Coordinates38.82830, -75.84660

Physical Characteristics

Dam TypeEarth
NID Height18 ft
Dam Height18 ft
Dam Length630 ft
Year Completed1936 (90 years old)

Storage & Hydraulics

NID Storage508 acre-ft
Max Storage508 acre-ft
Normal Storage180 acre-ft
Surface Area51 acres
Drainage Area7 sq mi
Max Discharge1,660 cfs
Spillway TypeControlled

Ownership & Safety

PurposeRecreation
OwnerGirl Scouts of the Chesapeake Bay
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection10/09/2024
Emergency Action PlanNo

Identifiers

NID IDMD00113
Federal IDMD00113
More InfoState Dam Safety Program

Nearby Dams

Scull Farm Pond 2.6 mi Low Nagels Mill Pond 3.8 mi Significant High Banks 5.8 mi Low Smithville Dam (possum Hill Road) 7.3 mi Low Chambers Lake 10.1 mi Significant Easton Secondary Sewage Lagoon 10.7 mi Low Easton Primary Sewage Lagoon 10.8 mi Low Tuckahoe State Park Dam (crouse Mill Road) 10.9 mi Low Lake Bonnie 13.7 mi Low Wye Mills Dam 14.9 mi Significant