Big Island



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

GPS Coordinates

Latitude, Longitude:
41.461144°, -90.6037482°
Elevation Icon


564 ft. (172 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. Big Island is covered by the Milan, IL 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

Smiths Island 0.7 mi
Beaver Island 0.7 mi
Indian Island 0.7 mi
Turkey Island 1.1 mi
Pettifer Island 1.6 mi

Nearby Cities

Annada, MO 152 mi
Paynesville, MO 153 mi
Rockbridge, IL 153 mi
Hamburg, IL 154 mi
Chesterfield, IL 155 mi

Nearby Points of Interest

Rock Island Conservation Club Man-made 0.3 mi
Lock Number 31 (historical) Man-made 0.6 mi
Smiths Park Man-made 0.6 mi
Interchange 11 Man-made 0.6 mi
Shooks Pond Water 0.6 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 ROCK ISLAND L&D 15 which is approximately 4 miles away and has an elevation of 568 feet (4 feet higher than Big 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 1.28" 30.2° 13.3°
February 1.41" 35.5° 18.8°
March 2.59" 47.5° 29.1°
April 3.64" 60.6° 41.3°
May 4.44" 72.2° 52.1°
June 4.75" 81.4° 63.2°
July 2.99" 85.1° 67.6°
August 4.31" 83.3° 65.6°
September 2.90" 76.4° 56.6°
October 2.39" 64.6° 45.0°
November 2.47" 47.8° 31.8°
December 1.93" 34.7° 19.6°

Summer High Temps

This location's average summer high temps are lower than 59% of other locations on record.

Winter Low Temps

This location's average winter low temps are lower than 69% of other locations on record.

Precipitation Levels

This location's average precipitation levels are lower than 51% of other locations on record.