Located in Thurston County, Washington, Black River Unit is a national wildlife refuge. The nearest town is Tumwater, about 11.5 km (7.1 mi) away (Black River Unit lies SW of town).
Wikidata describes it as: “approximately 3,800 acres of wetland and riparian habitats and surrounding uplands along the Black River managed as part of Billy Frank Jr. Nisqually National Wildlife Refuge”.
Sunrise & sunset directions
At Black River Unit the sunrise point swings a long way through the year: about 53° (NE) at the June solstice and 125° (SE) in late December. Sunset moves from 307° (NW) in June to 236° (SW) in December, and the midday sun climbs to 67° in summer but only 20° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:16 AM | 89° E | 7:25 PM | 271° W | 43° | 12h 09m |
| June solstice (Jun 21) | 5:18 AM | 53° NE | 9:11 PM | 307° NW | 67° | 15h 53m |
| September equinox (Sep 22) | 7:00 AM | 89° E | 7:12 PM | 271° W | 43° | 12h 12m |
| December solstice (Dec 21) | 7:56 AM | 125° SE | 4:26 PM | 236° SW | 20° | 8h 31m |
Azimuth is measured clockwise from true north (90° = east, 270° = west). Computed for 2026; values change by less than a degree from year to year.
Golden hour & blue hour by month
Wildlife is most active in the first and last two hours of daylight — exactly when the light is warmest.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:20 AM | 7:54 AM | 8:43 AM | 4:01 PM | 4:50 PM | 5:25 PM | 8h 57m |
| February | 6:46 AM | 7:17 AM | 8:00 AM | 4:54 PM | 5:37 PM | 6:08 PM | 10h 20m |
| March | 6:55 AM | 7:26 AM | 8:06 AM | 6:38 PM | 7:18 PM | 7:48 PM | 11h 52m |
| April | 5:53 AM | 6:25 AM | 7:06 AM | 7:20 PM | 8:00 PM | 8:32 PM | 13h 36m |
| May | 5:02 AM | 5:38 AM | 6:22 AM | 7:57 PM | 8:41 PM | 9:17 PM | 15h 03m |
| June | 4:38 AM | 5:18 AM | 6:05 AM | 8:22 PM | 9:09 PM | 9:49 PM | 15h 52m |
| July | 4:55 AM | 5:33 AM | 6:19 AM | 8:18 PM | 9:04 PM | 9:42 PM | 15h 31m |
| August | 5:37 AM | 6:10 AM | 6:52 AM | 7:42 PM | 8:25 PM | 8:58 PM | 14h 14m |
| September | 6:20 AM | 6:51 AM | 7:31 AM | 6:46 PM | 7:26 PM | 7:56 PM | 12h 35m |
| October | 7:00 AM | 7:31 AM | 8:12 AM | 5:45 PM | 6:26 PM | 6:57 PM | 10h 56m |
| November | 6:43 AM | 7:16 AM | 8:03 AM | 3:52 PM | 4:39 PM | 5:12 PM | 9h 23m |
| December | 7:16 AM | 7:52 AM | 8:43 AM | 3:33 PM | 4:24 PM | 5:00 PM | 8h 33m |
Local time (America/Los Angeles), including daylight saving time. Golden hour runs from about −4° to +6° solar altitude, so the morning golden hour begins during blue hour, before sunrise.
Milky Way & night sky
From Black River Unit, the Milky Way core is visible in a dark sky from April through August. June gives the longest window (about 2.2 hours on a moonless night), and the core peaks around 14° above the southern horizon. Our light-pollution model puts the sky at about Bortle 4 (rural / suburban transition), good enough for detailed Milky Way images.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -5° | — |
| February | Below 10° in darkness | — | 6° | — |
| March | 5:40 AM – 5:40 AM | 0.0 | 11° | SSE → SSE |
| April | 3:33 AM – 4:23 AM | 0.8 | 13° | SSE → SSE |
| May | 1:41 AM – 3:11 AM | 1.5 | 14° | SSE → S |
| June | 12:05 AM – 2:15 AM | 2.2 | 14° | SSE → SSW |
| July | 11:40 PM – 1:10 AM | 1.5 | 14° | S → SSW |
| August | 10:26 PM – 11:06 PM | 0.7 | 13° | SSW → SSW |
| September | Below 10° in darkness | — | 10° | — |
| October | Below 10° in darkness | — | 5° | — |
| November | Below 10° in darkness | — | -4° | — |
| December | Below 10° in darkness | — | -20° | — |
Window when the galactic core is at least 10° high during astronomical darkness on the 15th of each month. Pick nights within a few days of the new moon. Plan exact nights with the Milky Way planner.
Estimated sky darkness: 4 Bortle 4 — Rural / suburban transition. Light domes are visible in several directions; the Milky Way is clear but lacks detail near the horizon. Modeled zenith brightness ≈ 20.66 mag/arcsec². Aurora needs roughly Kp 5.0+ to show low on the northern horizon here.
Weather & best season
Long-term NASA satellite data for this area show July as the clearest month (about 48% average cloud cover) and January as the cloudiest (81%). August is the warmest month and December the coldest, which matters for gear, snow access and how long batteries last at night.
Average cloud cover (%)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 57 | 60 | 67 | 79 | 81 | 87 | 87 | 88 | 94 | 80 | 63 | 57 |
| Low °F | 19 | 21 | 26 | 28 | 33 | 41 | 45 | 45 | 36 | 26 | 21 | 15 |
| Precip. (in) | 10.8 | 6.9 | 8.4 | 5.5 | 3.2 | 2.2 | 0.8 | 1.3 | 3.0 | 7.1 | 11.5 | 10.9 |
Monthly climatology for the surrounding 1° grid cell from NASA POWER (MERRA-2). Mountain sites can be colder and cloudier than the cell average.
Photography tips for this national wildlife refuge
- Fast shutter speeds (1/2000 s+) freeze wingbeats; raise ISO rather than lose the shot.
- Migration peaks bring the largest concentrations — see the birding calendar for this state.
- Use auto-loop roads as mobile blinds; animals often tolerate vehicles more than people on foot.
- Stay on designated routes and keep a respectful distance — if an animal changes behavior, you are too close.
- Bring a spare battery — cold weather and long exposures drain them fast.
Season: Spring and autumn migration are the highlights; winter brings waterfowl to many southern refuges.
Suggested gear: Telephoto lens (400 mm+), Bean bag for car window, Binoculars. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Permits, drones & access
Drones: Launching or landing drones on National Wildlife Refuge lands generally requires a special use permit from the refuge manager, and wildlife disturbance rules apply everywhere.
Nearby photo spots
Other locations within 40 km of Black River Unit, closest first.
Lake
Waterfall
Lake
State Park
Lake
Mountain Peak
Waterfall
Lake
LakeFAQ
When is the best time to photograph Black River Unit?
What time is golden hour at Black River Unit?
Where does the sun rise and set at Black River Unit?
Can you see the Milky Way from Black River Unit?
Do you need a permit to photograph at Black River Unit?
How far is Black River Unit from Tumwater?
Sources
Location data: Wikidata. Sun, moon and Milky Way times are computed by LWPhoto Atlas for 2026. Climate: NASA POWER. Sky darkness is a population-based estimate (Walker's law), not a measurement. See data sources & licenses.