Main Supply Canal



Manmade waterway used by watercraft or for drainage, irrigation, mining, or water power.
water Icon Water
Map Marker

GPS Coordinates

Latitude, Longitude:
26.3875692°, -97.927223°
Elevation Icon


49 ft. (15 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. Main Supply Canal is covered by the Lasara, TX US Topo Map quadrant

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

Nearby Canals

Nearby Cities

Chico, TX 477 mi
Krugerville, TX 480 mi
Aubrey, TX 481 mi
Alvord, TX 482 mi
Melissa, TX 484 mi

Nearby Points of Interest

Delta Lake 2 Water 2.1 mi
KGBT-AM (Harlingen) Man-made 2.2 mi
Unit Number Two Water 2.2 mi
Delta Lake Water 2.3 mi
Unit Number One Water 2.8 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 SANTA ROSA 3 which is approximately 9 miles away and has an elevation of 50 feet (1 feet higher than Main Supply Canal). 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 .95" 69.1° 47.5°
February 1.06" 73.7° 51.2°
March 1.06" 81.0° 57.8°
April 1.32" 84.9° 63.4°
May 2.26" 89.4° 70.2°
June 2.05" 93.5° 74.0°
July 1.02" 96.0° 74.6°
August 2.17" 95.8° 74.3°
September 5.02" 91.6° 71.0°
October 2.59" 86.3° 63.5°
November .98" 78.8° 56.6°
December .92" 71.2° 49.3°

Summer High Temps

This location's average summer high temps are higher than 95% of other locations on record.

Winter Low Temps

This location's average winter low temps are higher than 98% of other locations on record.

Precipitation Levels

This location's average precipitation levels are lower than 73% of other locations on record.