Official State of Iowa Website Here is how you know

Blue Pit

General Information

County: Cerro Gordo
Location: southwest edge of Mason City
Acres: 15.00
Maximum Depth: 34 ft. (1992)
Motoring Restrictions: Electric Motors Only

Nearby Parks

Clear Lake State Park


Amenities at Blue Pit include:
  • Boat Access
  • Accessible Pier
  • Beach
  • Trails
  • Accessible Facilities
  • Good/Excellent Shorefishing
  • Gravel Boat Ramp
  • Community Fishing Location
No recent updates

You can zoom in on the map for bathymetric information for some lakes

  • Winter 2022 - 4,000 Rainbow Trout (12)
  • Winter 2021 - 4,048 Rainbow Trout (12)
  • Winter 2020 - 4,530 Rainbow Trout (12)
  • winter 2019 - 4,516 Rainbow Trout (10.8)
  • winter 2018 - 4,526 Rainbow Trout (2-3/lb)
  • annual 2017 - 4,021 Rainbow Trout (2-3/lb)
  • Jan 2016 - 1,250 Brook Trout (2-3/lb)
  • Jan 2016 - 3,000 Rainbow Trout (2-3/lb)
  • annual 2015 - 4,000 Rainbow Trout (2-3/lb)
  • annual 2014 - 4,127 Rainbow Trout (2-3/lb)
  • Curlyleaf Pondweed
  • Eurasian Watermilfoil
  • Zebra Mussel
The Fishing Regulations brochure is available for download. The summaries listed below are a partial listing provided for your benefit.

  • Bluegill
    • Season: Continuous
    • Daily Bag Limit: 25 fish
    • Possession Limit: unlimited
    • Length Limit: none
    • Other: No daily limit on private waters
  • Largemouth Bass
    • Season: Continuous
    • Daily Bag Limit: combined black bass, 3 fish
    • Possession Limit: combined black bass, 6 fish
    • Length Limit: 15-inch minimum
    • Other:
  • Rainbow Trout
    • Season: Continuous
    • Daily Bag Limit: combined trout (brook, brown, and rainbow) - 5 fish
    • Possession Limit: combined trout (brook, brown, and rainbow) - 10 fish
    • Length Limit: none
    • Other: Anglers must have paid the Trout Fee to fish for or possess trout
Blue Pit is stocked twice per season with Rainbow Trout. There is a November stocking arounf the Thanksgiving week and then a through the ice stocking in mid January. A total of 4,000 trout are stocked most seasons. Other gamefish species are present in Blue Pit, but most anglers target the trout in the fall and winter months.(2024)
Tip: Click the arrow in the lower right corner to view the Fish Survey Data tool in full-screen mode.


Iowa-Caught Fish Are Safe to Eat, In Almost All Cases

The vast majority of Iowa’s streams, rivers and lakes offer safe and high-quality fish that pose little or no threat to human health if consumed. Some limitations may apply for young children and pregnant women. Here’s a Fish Consumption Fact Sheet from the Iowa DNR and the Iowa Dept. of Public Health for more information. Here is a list of current fish consumption advisories for Iowa lakes and rivers.