Grass Lake NWR
Stillwater County, MT · 6.6 mi NW
1.7K huntable acres
Waterfowl Production Area · Stillwater County, Montana
Hansen Waterfowl Production Area is a public parcel of roughly 2,806 acres located in Stillwater County, Montana. It is managed by the Charles M. Russell Wetland Management District as part of the Stillwater County Waterfowl Production Area group of WPAs. Waterfowl Production Areas are purchased largely with Federal Duck Stamp dollars and are generally open to hunting, trapping and fishing under state regulations, with some federal restrictions.
Gold outlines are fee-title Waterfowl Production Areas — public land. Everything outside is typically private; always look for boundary signs.
Destination: Hansen Waterfowl Production Area
45.88090, -109.0061845°52′51.2″N 109°00′22.2″WStraight-line distances. Driving routes are longer; many refuge roads are gravel and may close seasonally.
*½ hour before sunrise — the standard federal shooting-hour start for migratory game birds. Times in Denver local time.
Full season calculator →| Date | Shooting light | Sunrise | Sunset | Daylight |
|---|---|---|---|---|
| Tue, Sep 1, 2026 | 6:05 AM | 6:35 AM | 7:57 PM | 13h 21m |
| Tue, Sep 15, 2026 | 6:22 AM | 6:52 AM | 7:29 PM | 12h 37m |
| Thu, Oct 1, 2026 | 6:42 AM | 7:12 AM | 6:58 PM | 11h 46m |
| Thu, Oct 15, 2026 | 7:00 AM | 7:30 AM | 6:32 PM | 11h 01m |
| Sun, Nov 1, 2026 | 6:25 AM | 6:55 AM | 5:04 PM | 10h 09m |
| Sun, Nov 15, 2026 | 6:45 AM | 7:15 AM | 4:46 PM | 9h 31m |
| Tue, Dec 1, 2026 | 7:06 AM | 7:36 AM | 4:34 PM | 8h 57m |
| Tue, Dec 15, 2026 | 7:20 AM | 7:50 AM | 4:31 PM | 8h 41m |
| Fri, Jan 1, 2027 | 7:27 AM | 7:57 AM | 4:40 PM | 8h 43m |
| Fri, Jan 15, 2027 | 7:23 AM | 7:53 AM | 4:55 PM | 9h 02m |
| Mon, Feb 1, 2027 | 7:09 AM | 7:39 AM | 5:19 PM | 9h 40m |
Computed for 45.881, -109.006 (MDT / DST-aware). Check state rules — big game hours vary.
Loading National Weather Service forecast…
Forecast from the National Weather Service. Wind direction matters — plan your approach downwind of where game beds.
| WPA | Acres | Distance | County |
|---|---|---|---|
| Hailstone WPA | 1,766 | 12 mi NW | Stillwater County |
| Spidel WPA | 487 | 19 mi NE | Yellowstone County |
| Spidel WPA | 775 | 19 mi N | Golden Valley County |
| Tew WPA | 557 | 27 mi NE | Musselshell County |
Source: USFWS Realty Tracts (fee-title interest), Stillwater County Waterfowl Production Area. Acreage from GIS polygons; deeded acreage from realty records.