Browse 64,517 DNR stocking records from 1979 to present. Filter by year and month to explore historical patterns.
Monthly breakdown for 2026. Darker = more events. Click a month to filter.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 |
Total stocking events per year across all Michigan lakes. Click any bar to explore that year.
Fishing Pro members see the full lake list with species detail, stocking quantities, confidence ratings, and year-over-year history — filterable by any month and year going back to 1979.
Fishing Pro — $4.99/moFish species with the most stocking activity across all years, ranked by event count.
Counties with the most DNR stocking activity across all years. Click any county to browse its lakes.
April is historically the most active month for DNR stocking in Michigan, with 23,826 events on record. Spring months (April through June) generally see the highest activity as hatcheries release fish before the summer season.
Allegan County has the most DNR stocking records of any Michigan county, with 4,335 events across 19 lakes. Top counties tend to have larger numbers of public lakes and higher recreational fishing pressure.
All records are sourced directly from the Michigan Department of Natural Resources and synced regularly. Nothing is estimated — every event shown came from the official DNR stocking report dating back to 1979.
Fishing Pro members receive an email the moment the DNR adds a new stocking record for a lake they are tracking — the same day the data hits our system.