Sunrise at the photo blind at Delevan National Wildlife Refuge, California
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39.3166° N122.1010° WBortle 3Los Angeles

Delevan National Wildlife Refuge Photography Guide

National Wildlife Refuge in Colusa County, California

  • Bortle 3 sky
  • Sunset azimuth 240°–302°
  • Clearest: July
  • Milky Way Mar–Sep
Photo: Lora Haller/USFWS · Public domain · source

Located in Colusa County, California, Delevan National Wildlife Refuge is a national wildlife refuge. The nearest town is Maxwell, about 9.0 km (5.6 mi) away (Delevan National Wildlife Refuge lies ENE of town).

The Delevan National Wildlife Refuge is one of six refuges in the Sacramento National Wildlife Refuge Complex in the Sacramento Valley of central northern California.From the Wikipedia article “Delevan National Wildlife Refuge”, licensed under CC BY-SA 4.0.
Nearest town
Maxwell
9.0 km (5.6 mi)
Sky darkness
Bortle 3
Rural sky
Clearest month
July
10% cloud
Milky Way peak
June
5.0 h window
Golden hour (Oct)
5:54 PM
sunset 6:31 PM

Light at Delevan National Wildlife Refuge

Live
Sunrise
7:24 AM
Sunset
6:24 PM
Golden hour AM
7:07 AM – 8:01 AM
Golden hour PM
5:47 PM – 6:40 PM
Blue hour AM
6:57 AM – 7:07 AM
Blue hour PM
6:40 PM – 6:51 PM
Full darkness
7:53 PM – 5:56 AM
Moon
Waxing Gibbous · 71%
Moonrise / set
3:38 PM / 1:32 AM
Day length
11h 00m
Sunrise azimuth
103°
Sunset azimuth
257°
000306091215182124
NightTwilightBlue hourGolden hourDaylight

Times in America/Los Angeles. Golden hour = sun −4° to +6°; blue hour = −6° to −4°.

Clouds at sunrise & sunset

NWS

Hourly sky cover from the National Weather Service. 20–60% cloud often gives the most colorful sunrises and sunsets.

Sunrise & sunset directions

At Delevan National Wildlife Refuge the sunrise point swings a long way through the year: about 58° (ENE) at the June solstice and 120° (ESE) in late December. Sunset moves from 302° (WNW) in June to 240° (WSW) in December, and the midday sun climbs to 74° in summer but only 27° in winter.

NESW60°30°
June solsticeEquinoxesDecember solstice
DateSunriseAzimuthSunsetAzimuthNoon sunDaylight
March equinox (Mar 20)7:13 AM90° E7:21 PM271° W51°12h 08m
June solstice (Jun 21)5:43 AM58° ENE8:39 PM302° WNW74°14h 56m
September equinox (Sep 22)6:57 AM89° E7:07 PM271° W51°12h 10m
December solstice (Dec 21)7:26 AM120° ESE4:49 PM240° WSW27°9h 24m

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 startsSunriseGolden hour endsGolden hour startsSunsetBlue hour endsDaylight
January6:58 AM7:27 AM8:08 AM4:29 PM5:10 PM5:39 PM9h 42m
February6:34 AM7:01 AM7:39 AM5:08 PM5:46 PM6:13 PM10h 44m
March6:54 AM7:21 AM7:56 AM6:40 PM7:16 PM7:42 PM11h 55m
April6:04 AM6:32 AM7:08 AM7:10 PM7:46 PM8:14 PM13h 14m
May5:25 AM5:56 AM6:34 AM7:37 PM8:16 PM8:46 PM14h 20m
June5:10 AM5:42 AM6:22 AM7:57 PM8:37 PM9:10 PM14h 55m
July5:23 AM5:55 AM6:34 AM7:56 PM8:35 PM9:07 PM14h 40m
August5:53 AM6:22 AM6:59 AM7:29 PM8:05 PM8:34 PM13h 43m
September6:24 AM6:50 AM7:26 AM6:43 PM7:19 PM7:45 PM12h 28m
October6:52 AM7:19 AM7:55 AM5:54 PM6:31 PM6:58 PM11h 12m
November6:24 AM6:53 AM7:33 AM4:15 PM4:55 PM5:24 PM10h 02m
December6:52 AM7:22 AM8:04 AM4:05 PM4:47 PM5:17 PM9h 25m

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 Delevan National Wildlife Refuge, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 5.0 hours on a moonless night), and the core peaks around 22° above the southern horizon. Our light-pollution model puts the sky at about Bortle 3 (rural sky), good enough for detailed Milky Way images.

MonthCore visible (15th)HoursMax altitudeDirection
JanuaryBelow 10° in darkness—-2°—
February5:15 AM – 5:25 AM0.212°SE → SE
March4:25 AM – 5:45 AM1.318°SE → SSE
April2:21 AM – 4:51 AM2.522°SE → S
May12:23 AM – 4:03 AM3.722°SE → S
June10:37 PM – 3:37 AM5.022°SE → SSW
July10:29 PM – 2:09 AM3.722°SSE → SW
August9:45 PM – 12:15 AM2.521°S → SW
September8:49 PM – 10:09 PM1.318°SSW → SW
October8:00 PM – 8:10 PM0.212°SW → SW
NovemberBelow 10° in darkness—0°—
DecemberBelow 10° in darkness—-19°—

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: 3 Bortle 3 — Rural sky. Some light domes sit on the horizon, but the Milky Way still looks complex overhead. Modeled zenith brightness ≈ 21.29 mag/arcsec².

Weather & best season

Long-term NASA satellite data for this area show July as the clearest month (about 10% average cloud cover) and December as the cloudiest (58%). July is the warmest month and December the coldest, which matters for gear, snow access and how long batteries last at night.

Average cloud cover (%)

JanFebMarAprMayJunJulAugSepOctNovDec
JanFebMarAprMayJunJulAugSepOctNovDec
High °F727279901031111161131101028872
Low °F242527293540525142352421
Precip. (in)4.85.33.92.01.20.40.00.10.21.43.26.6

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

  • Stay on designated routes and keep a respectful distance — if an animal changes behavior, you are too close.
  • A 400–600 mm lens (or a crop body) is the usual tool for birds.
  • 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.
  • Tell someone where you're going in remote areas and carry the ten essentials.

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 Delevan National Wildlife Refuge, closest first.

Sacramento National Wildlife RefugeNational Wildlife Refuge
Sacramento National Wildlife Refuge12 km away · Glenn County
Colusa National Wildlife RefugeNational Wildlife Refuge
Colusa National Wildlife Refuge18 km away · Colusa County
Waterfall
The Falls25 km away · Sutter County · 172 m
Sutter ButtesVolcano
Sutter Buttes27 km away · Sutter County
Sutter National Wildlife RefugeNational Wildlife Refuge
Sutter National Wildlife Refuge39 km away · Sutter County

FAQ

When is the best time to photograph Delevan National Wildlife Refuge?
July has the clearest skies on average; june is best for the milky way core. For light, plan around the first and last hour of sun. Spring and autumn migration are the highlights; winter brings waterfowl to many southern refuges.
What time is golden hour at Delevan National Wildlife Refuge?
In October the evening golden hour starts around 5:54 PM and ends after sunset at about 6:31 PM; the morning golden hour lasts until about 7:55 AM. Use the live widget above for exact times on any date.
Where does the sun rise and set at Delevan National Wildlife Refuge?
Sunrise azimuth ranges from about 58° in June to 120° in December; sunset ranges from 302° to 240°. See the sun-path diagram for the full arc.
Can you see the Milky Way from Delevan National Wildlife Refuge?
Yes — the core is visible from March to September on moonless nights. The estimated sky quality is Bortle 3 (rural sky).
Do you need a permit to photograph at Delevan National Wildlife Refuge?
Personal photography from public land rarely needs a permit. Commercial shoots, models, large groups and drones may require permission from the land manager — check before you go.
How far is Delevan National Wildlife Refuge from Maxwell?
About 9.0 km (5.6 mi) in a straight line; driving distance is usually longer, especially in mountain terrain.

Sources

Location data: Wikidata, Wikipedia. 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.