Eurasian watermilfoil: long-term trends in unmanaged populations The Wisconsin Department of Natural Resources conducts and supports a variety of projects that improve our understanding of aquatic …

Population Statistics

Long term sediment trap polychlorinated biphenyl (PCB) trends at Lock and Dam 3 and 4 (1987-2017). PCB concentration is in nanograms/g and normalized to 1% total organic carbon content.

Population Statistics & Trends Fawn to doe ratios and yearling buck percentages are used to help estimate the deer herd size annually and is the starting point for setting antlerless harvest quotas.

Attention: For Northern Forest Zone: Due to the 2025 boundary changes in the Northern Forest Zones, there is no historical data to provide. We will continue to build on this new dataset moving forward. …

Harvest Statistics

Fawn to doe ratios collected in late summer give information on fawn recruitment and survival and are used as an input into the formula for annual deer herd abundance estimation. Fawn to doe ratios …

Every year following the close of firearm and archery deer seasons, randomly selected hunters are surveyed in an effort to measure hunter participation, success, effort and attitudes on various …

The primary objective of Long Term Trend (LTT) Lakes monitoring is to document long-term trends in lake water chemistry. This data set also provides context for water chemistry in other lakes in terms …

Non-CWD: EHD was not detected in any county in 2022 or 2023. EHD History Epizootic hemorrhagic disease (EHD) is an acute, infectious, viral disease spread by biting insects (especially midges) that …