Iowa DNR
Iowa DNR
AQuIA
Water Quality Monitoring
Surface Waters - Groundwater
Physical - Chemical - Fish Tissue
Site Details
Facility
21IOWA
Type
Lake
HUC8 Basin
07100006
County
CALHOUN
State
IA
Latitude
42.4790313
Longitude
-94.63714556
First Sample Date
7/22/2003 11:45:00 AM
Last Sample Date
8/26/2025 10:47:00 AM
Total Results
1,875
Projects/Tasks
  • BEACH
  • BEACHCCO
External Data References
ADB Segment
Beach Monitoring Site
Park Name
Twin Lakes State Park
Lake Name
North Twin Lake
Beach Owner
State
Beach Classification
Less Vulnerable
Beach Monitoring Active
Yes