Karlson Island (aka Carlson Island)



Area of dry or relatively dry land surrounded by water or low wetland.
land Icon Land
Map Marker

GPS Coordinates

Latitude, Longitude:
46.1998315°, -123.6012461°
Elevation Icon


10 ft. (3 m.)

Topographic Map

US Topo Map

The USGS (U.S. Geological Survey) publishes a set of the most commonly used topographic maps of the U.S. called US Topo that are separated into rectangular quadrants that are printed at 22.75"x29" or larger. Karlson Island is covered by the Knappa, OR US Topo Map quadrant

Free US Topo Map PDF Order Waterproof Printed Topo Map
Water Icon Water
Land Icon Land
Man-made Icon Man-made

Nearby Islands

Minaker Island 1.2 mi
Marsh Island Light 1.3 mi
Marsh Island 1.5 mi
North Island 1.9 mi
Seal Island 2.0 mi

Nearby Cities

Little River, CA 479 mi
Comptche, CA 479 mi
Redwood Valley, CA 480 mi
Calpella, CA 482 mi
Albion, CA 482 mi

Nearby Points of Interest

Knappa Slough Water 0.8 mi
Blind Slough Water 0.9 mi
Knappa Docks Man-made 1.0 mi
Warren Slough Water 1.1 mi
Little Creek Water 1.1 mi

Nearby Photos

Photos provided by Panoramio and Flickr are under the copyright of their owners.

Historical Weather

Below are weather averages from 1971 to 2000 according to data gathered from the nearest official weather station. The nearest weather station for both precipitation and temperature measurements is GRAYS RIVER HATCH which is approximately 13 miles away and has an elevation of 100 feet (90 feet higher than Karlson Island). Because the nearest station and this geographic feature may have differences in elevation and topography, the historic weather at the two separate locations may be different as well.

Average Daily Temperatures by Month (°F)

Average Monthly Precipitation (in inches)

Month Precip AVG High Temp AVG Low Temp
January 15.71" 47.5° 33.7°
February 13.21" 50.6° 34.5°
March 11.88" 54.2° 35.7°
April 7.96" 58.2° 37.9°
May 5.11" 63.3° 42.5°
June 3.90" 67.4° 46.7°
July 1.98" 72.6° 49.9°
August 2.24" 73.8° 49.7°
September 4.25" 71.5° 46.1°
October 9.36" 62.6° 40.8°
November 16.31" 52.3° 37.4°
December 17.49" 47.1° 34.5°

Summer High Temps

This location's average summer high temps are lower than 96% of other locations on record.

Winter Low Temps

This location's average winter low temps are higher than 84% of other locations on record.

Precipitation Levels

This location's average precipitation levels are higher than 99% of other locations on record.