Flint Steel River Dune and Swale Complex (Minor) is a sand dunes in Ontonagon County, Michigan at about 192 m (630 ft) above sea level. The nearest town is Ontonagon, about 7.6 km (4.7 mi) away (Flint Steel River Dune and Swale Complex (Minor) lies ENE of town).
Sunrise & sunset directions
At Flint Steel River Dune and Swale Complex (Minor) 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) | 8:01 AM | 90° E | 8:10 PM | 271° W | 43° | 12h 09m |
| June solstice (Jun 21) | 6:03 AM | 53° NE | 9:56 PM | 307° NW | 67° | 15h 53m |
| September equinox (Sep 22) | 7:44 AM | 89° E | 7:57 PM | 271° W | 43° | 12h 12m |
| December solstice (Dec 21) | 8:40 AM | 125° SE | 5:11 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
Dunes need low sun: ripples and ridgelines only appear when side-light casts shadows, so shoot within an hour of sunrise or sunset.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 8:04 AM | 8:39 AM | 9:28 AM | 4:46 PM | 5:35 PM | 6:09 PM | 8h 56m |
| February | 7:31 AM | 8:02 AM | 8:45 AM | 5:39 PM | 6:22 PM | 6:53 PM | 10h 19m |
| March | 7:41 AM | 8:11 AM | 8:51 AM | 7:22 PM | 8:03 PM | 8:33 PM | 11h 52m |
| April | 6:38 AM | 7:10 AM | 7:51 AM | 8:04 PM | 8:45 PM | 9:17 PM | 13h 35m |
| May | 5:47 AM | 6:23 AM | 7:07 AM | 8:41 PM | 9:26 PM | 10:02 PM | 15h 03m |
| June | 5:23 AM | 6:03 AM | 6:50 AM | 9:07 PM | 9:54 PM | 10:34 PM | 15h 51m |
| July | 5:40 AM | 6:18 AM | 7:04 AM | 9:03 PM | 9:49 PM | 10:27 PM | 15h 31m |
| August | 6:22 AM | 6:55 AM | 7:37 AM | 8:27 PM | 9:10 PM | 9:43 PM | 14h 14m |
| September | 7:05 AM | 7:35 AM | 8:15 AM | 7:31 PM | 8:11 PM | 8:41 PM | 12h 35m |
| October | 7:45 AM | 8:15 AM | 8:57 AM | 6:30 PM | 7:11 PM | 7:42 PM | 10h 56m |
| November | 7:28 AM | 8:01 AM | 8:48 AM | 4:37 PM | 5:24 PM | 5:57 PM | 9h 23m |
| December | 8:01 AM | 8:36 AM | 9:28 AM | 4:18 PM | 5:09 PM | 5:45 PM | 8h 33m |
Local time (America/Detroit), 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 Flint Steel River Dune and Swale Complex (Minor), 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 1 (excellent dark-sky site), which is excellent for astrophotography.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -5° | — |
| February | Below 10° in darkness | — | 5° | — |
| March | 6:25 AM – 6:25 AM | 0.0 | 11° | SSE → SSE |
| April | 4:18 AM – 5:08 AM | 0.8 | 13° | SSE → SSE |
| May | 2:25 AM – 3:55 AM | 1.5 | 14° | SSE → S |
| June | 12:50 AM – 3:00 AM | 2.2 | 14° | SSE → SSW |
| July | 12:25 AM – 1:55 AM | 1.5 | 14° | S → SSW |
| August | 11:12 PM – 11:52 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: 1 Bortle 1 — Excellent dark-sky site. The Milky Way casts faint shadows; zodiacal light and airglow are obvious. Modeled zenith brightness ≈ 21.94 mag/arcsec². Aurora needs roughly Kp 3.5+ 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 54% average cloud cover) and December as the cloudiest (78%). July is the warmest month and January 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 | 40 | 49 | 73 | 76 | 87 | 88 | 96 | 93 | 89 | 79 | 67 | 54 |
| Low °F | -21 | -26 | -19 | 6 | 23 | 34 | 40 | 42 | 31 | 13 | -1 | -20 |
| Precip. (in) | 1.7 | 1.7 | 1.8 | 3.2 | 3.7 | 4.1 | 3.7 | 3.4 | 3.8 | 3.7 | 2.3 | 2.3 |
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 sand dunes
- Walk along ridges rather than across faces to avoid leaving footprints in your future compositions.
- A telephoto isolates S-curves and layered ridges.
- Wind erases tracks overnight — mornings have the cleanest sand.
- Protect gear from blowing sand; avoid changing lenses in the wind.
- Scout in daylight if you plan to shoot at night or before sunrise.
Season: Spring and autumn for comfortable temperatures; full moon nights give soft light on the sand.
Suggested gear: Telephoto lens, Lens blower, Sun protection, Water. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Nearby photo spots
Other locations within 25 km of Flint Steel River Dune and Swale Complex (Minor), closest first.
Lighthouse
Sand Dunes
WaterfallSand DunesFAQ
When is the best time to photograph Flint Steel River Dune and Swale Complex (Minor)?
What time is golden hour at Flint Steel River Dune and Swale Complex (Minor)?
Where does the sun rise and set at Flint Steel River Dune and Swale Complex (Minor)?
Can you see the Milky Way from Flint Steel River Dune and Swale Complex (Minor)?
Do you need a permit to photograph at Flint Steel River Dune and Swale Complex (Minor)?
How far is Flint Steel River Dune and Swale Complex (Minor) from Ontonagon?
Sources
Location data: USGS GNIS / GeoNames. 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.