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


Amenities at Blue Pit include:
  • Boat Access
  • Accessible Pier
  • Beach
  • Trails
  • Accessible Facilities
  • Good/Excellent Shorefishing
  • Gravel Boat Ramp
For lake updates and fishing information in the north central area, contact the Clear Lake Fish and Wildlife office at 641-357-3517.
There was 1,400 trout (rainbow and brook) stocked on January 16th.
Rainbow Trout - Fair: No reports this week but there should be some willing biters yet. The trout seem to move in groups, so you may need to move up and down the shoreline to find them. Limit is 5 trout per trout stamp.

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

  • Winter 2013 - 4,000 Rainbow Trout (2-3/l)
  • winter 2012 - 3,000 Rainbow Trout (2-3/l)
  • winter 2011 - 2,900 Rainbow Trout (2-3/l)
  • winter 2010 - 2,900 Rainbow Trout (2-3/l)
  • 09/08/2010 - 216 Channel Catfish (9.4")
  • winter 2009 - 6,000 Rainbow Trout (2-3/l)
  • winter 2008 - 6,267 Rainbow Trout (2-3/l)
  • 09/10/2008 - 270 Channel Catfish (7.4")
  • winter 2007 - 7,035 Rainbow Trout (2-3/l)
  • winter 2006 - 3,002 Rainbow Trout (2-3/l)
  • 09/07/2006 - 336 Channel Catfish (6.8")
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
1500 rainbow trout were stocked on November 25th(2015)


Fish Surveys

Lake Fish Survey Data Data from the most recent fisheries survey of this lake is provided on this external web site. This data may include information from various netting surveys and/or electroshocking surveys. Data includes numbers of fish sampled, and fish size ranges. Not all lakes are sampled every year.

Lake Mini-report

Lake Reports Summary report information about selected (~130) lakes regarding water quality, upstream land use, usage, economic value and more. Reports are customizable by the user to include only that information which the user desires to include.

Water Quality

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.