Hartlaub Lake

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No News to Report for Hartlaub Lake

    Hartlaub Lake, April 2015
    Hartlaub Lake, April 2015
    by Ken & Karen Schuler, TrawlersMidwest.com

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    Click on the maps to enlarge. Bathymetric Map Courtesy of and Copyright Sportsman’s Connection, based on Wisconsin DNR data. Watershed map courtesy of Manitowoc County Soil and Water Conservation Department. New! Zoom in even closer with this new interactive watershed mapping tool.  


    Location/Directions: Hartlaub Lake Road, Town of Newton. Take Highway 42 South from Manitowoc 2 miles to English Lake Road. East on English Lake Road .3 miles to Hartlaub Lake Road. East on Hartlaub Lake Road to boat landing.

    Accessibility: 44.04516470, -87.73757110

    Surface Area: 37 acres

    Shorelength: 1.2 mi

    Depth: Max 60′, Mean 20′

    Bottom: 0% sand, 10% gravel, 0% rock, 90% muck

    Type of Lake: Deep Seepage. Deep Seepage lakes stratify, or form separate layers of water, during the summer months and have no inlet or outlet.

    Restrictions: Electric motors only. Motorboat Prohibition, Seaplanes, Slow-No-Wake Areas, Slow-No-Wake Hours, Water Skiing Restrictions. See posted and read the Wisconsin handbook

    Recreational Features: Parking for 8 car/trailer units is provided at the public access. The steep access road and parking area has been blacktopped, access road is barricaded during the winter months. Due to the soft bottom of the lake, a 60 foot port-a-pier has been installed for easier access.

    Manitowoc County Map and Photos: http://www.co.manitowoc.wi.us/departments/i-p/parks/lake-access/hartlaub-lake/


    Aquatic Invasive Species Threats:

    Verified: Curly-Leaf Pondweed (2010), Eurasian Water-Milfoil (2009), Hybrid Eurasian / Northern Water-Milfoil (2011)


    Fishing Regulations:

    • Fish present: The lake is known for northern pike, bass, walleye and panfish.
    • Management: Northern pike, Largemouth Bass.
    • View complete Hartlaub Lake regulations at DNR
    • Open All Year
      • Panfish: Daily bag limit 25. No min length.
      • Catfish: Daily bag limit 10. No min length.
    • Open 5/6/2017-3/4/2018:
      • Largemouth/smallmouth bass: 14″ Limit 5.
      • Northern Pike: 26″ Limit 2.
      • Walleye: 15″ Limit 5.
    • Motor Trolling is allowed with up to 3 hooks, baits, or lures, per angler.
    • Familiarize yourself with Wisconsin fishing:
      WDNR Hook & Line Guide
    • Consumption Advisory: General Manitowoc County/Mercury. Click here.

    Fish Stocking:

    DNR Fishing Survey Report: Most recent report 2011

    DNR Fish Stocking Data
    Year Species Strain Age Class Number Stocked Average Length (inches)
    1998 NORTHERN PIKE LAKE PUCKAWAY LARGE FINGERLING 170 7.90″
    1997 NORTHERN PIKE UNSPECIFIED LARGE FINGERLING 68 8.10″
    1997 LARGEMOUTH BASS UNSPECIFIED LARGE FINGERLING 100 6.00″
    View more history

    Hartlaub Lake has some largemouth bass, northern pike, and the usual crop of panfish. Plastic worms or spinnerbaits will work for the bigmouths, and crankbaits or spoons will fool the northerns. Panfish should respond well to jig and waxie or jig and minnow combinations. Access is on the northwest shore.


    Condition: GOOD.

    • 5-Year Average Trophic State: 49/Mesotrophic (Source: Wisconsin DNR)
    • Secchi Disk (2016): Average summer reading = 4.9 ft. SE Georegion average = 6.8 ft. Summer (July/Aug) water was reported as MURKY and GREEN. This suggests that the secchi depth may be mostly impacted by algae. Algal blooms are generally considered to decrease the aesthetic appeal of a lake because people prefer clearer water to swim in and look at. Algae are always present in a balanced lake ecosystem; they are eaten by zooplankton, which are in turn eaten by fish. 
    • Chemistry (2016): The average summer Chlorophyll was 11.4 µg/l (compared to a Southeast Georegion summer average of 23.5 µg/l). The summer total Phosphorus average was 28.4 µg/l. Lakes that have more than 20 µg/l and impoundments that have more than 30 µg/l of total phosphorus may experience noticeable algae blooms.
    • Trophic State Index (TSI) (2016): 53/Eutrophic. What does this mean?
      Eutrophic lakes are high in nutrients and contain large populations of plants, algae, and fish, which often grow to nuisance levels, and the fish species are generally tolerant of warm temperatures and low oxygen conditions. Phosphorus can fuel algae blooms. This TSI usually suggests decreased clarity, fewer algal species, oxygen-depleted bottom waters during the summer, plant overgrowth evident, warm-water fisheries (pike, perch, bass, etc.) only.

    View this graph on the DNR website

    Based on Wisconsin DNR data from volunteer readings taken on 19 different days in March-Sept 2016.


    Click on the maps to enlarge. Bathymetric Map Courtesy of and Copyright Sportsman’s Connection, based on Wisconsin DNR data. Watershed map courtesy of Manitowoc County Soil and Water Conservation Department. New! Zoom in even closer with this new interactive watershed mapping tool.  
    Updated: April 25, 2017 — 11:08 pm

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