HYDROGEOLOGIC REPOSITORY AND COLOMBIA WATER WELL INSTALLATION, SEPTEMBER 2018
NAVFAC EXWC provided hydrogeologic and engineering technical field support to the Naval Mobile Construction Battalion One-Thirty-Three (NMCB 133) water well team for the Southern Partnership Station 2018 Well Project.
NAVFAC EXWC and NMCB 133 successfully installed an 800-foot-deep water well in Riohacha, Colombia. This process utilized a 6-5/8-inch outer diameter and stainless steel threading casing, including 200 feet of wire wrap screen (0.020-inch) set within water production bearing zones. The team targeted water screened through two water bearing zones below ground surface to provide clean water to an indigenous Wayuu tribal village in a sub-arid region near Riohacha, Colombia. The area has experienced multiple consecutive years of drought, and the local community needed better access to clean drinking water. The Team intended the well to improve the well-being of those affected by the drought and alleviate problems caused by the scarcity of water. The team calculated preliminary water well yield to range up to 98 gallons per minute, producing good (“sweet”) water production capacity.
The Colombian Ministry of Water informed the U.S. Navy that this effort has turned out to be the only fresh water well in the entire drought stricken region. The water well is currently filling up tanker trucks with the capability of holding up to 2,000 gallons of water, and successfully hauling fresh drinking water daily to over 20 local villages.