Tiskilwa Structure 1 Dam

High HazardNot Available ConditionEmergency Action Plan: No

Location

StateIllinois
CountyBureau
Nearest CityTISKILWA
River/StreamROCKY RUN
Coordinates41.28411, -89.55382

Physical Characteristics

Dam TypeEarth
NID Height49 ft
Dam Height49 ft
Dam Length930 ft
Year Completed1960 (66 years old)

Storage & Hydraulics

NID Storage764 acre-ft
Max Storage764 acre-ft
Normal Storage99 acre-ft
Surface Area12 acres
Drainage Area1 sq mi
Max Discharge1,887 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerVILLAGE OF TISKILWA
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentNot Available
Last Inspection05/06/2025
Emergency Action PlanNo

Identifiers

NID IDIL00449
Federal IDIL00449
More InfoState Dam Safety Program

Nearby Dams

Harmon Pond Dam 1.5 mi Significant Tiskilwa Strucure 2 Dam 1.7 mi High Tiskilwa Structure 4 Dam 1.9 mi High Tiskilwa Structure 5 Dam 2.4 mi High Clover Leaf Ranch Lake Dam 3.3 mi Low Bolton Lakes Dam 3.8 mi Low Newton-hager Lake Dam 6.9 mi Low Lake Arispie Dam 7.6 mi Significant Lake Thunderbird Dam 8.1 mi High Condit Dam 1 8.7 mi Low