Mary Jo 841-002 Dam



Water barrier or embankment built across the course of a stream or into a body of water to control and (or) impound the flow of water.
man-made Icon Man-made
Map Marker

GPS Coordinates

Latitude, Longitude:
32.7133889°, -116.6425188°
Elevation Icon


2575 ft. (785 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. Mary Jo 841-002 Dam is covered by the Barrett Lake, CA 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 Dams

Mary Jo Dam 0.0 mi
Henry Junior Dam 0.5 mi
Henry Jr 841 Dam 0.6 mi
Barrett Dam 2.9 mi
Barrett Dam 2.9 mi

Nearby Cities

Potrero, CA 8 mi
Descanso, CA 10 mi
Pine Valley, CA 10 mi
Alpine, CA 11 mi
Campo, CA 13 mi

Nearby Points of Interest

Corral Canyon Land 0.9 mi
Red Top Land 1.2 mi
Pine Valley Creek Water 1.4 mi
Spring Canyon Land 1.5 mi
Boneyard Canyon Land 1.7 mi

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 ALP which is approximately 12 miles away and has an elevation of 1,735 feet (840 feet lower than Mary Jo 841-002 Dam). 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 3.49" 65.0° 43.1°
February 3.44" 66.2° 44.1°
March 3.92" 66.8° 44.7°
April 1.26" 71.9° 47.1°
May .47" 75.1° 50.7°
June .20" 83.0° 55.6°
July .16" 88.6° 60.7°
August .27" 89.4° 62.3°
September .42" 86.4° 60.6°
October .85" 79.4° 54.2°
November 1.72" 71.2° 46.8°
December 1.99" 65.4° 43.1°

Summer High Temps

This location's average summer high temps are higher than 65% of other locations on record.

Winter Low Temps

This location's average winter low temps are higher than 96% of other locations on record.

Precipitation Levels

This location's average precipitation levels are lower than 78% of other locations on record.