• Members of the Mississippi National Guard unload equipment for karez cleaning at a village in Zabul province, Afghanistan, Dec. 14, 2012.  The Miss. NG Zabul Agricultural Development Team helps villages in the Tarnek wa Jaldak district of Zabul province inspect their karez system for damage and then loans the villages the equipment needed for repairs.  A karez is a system of underground channels that carry water from the aquifer at higher elevations to areas down slope.  (U.S. Army Photo by Sgt. Lori Bilyou)

    Ancient aqueducts receive cleaning

    Members of the Mississippi National Guard unload equipment for karez cleaning at a village in Zabul province, Afghanistan, Dec. 14, 2012. The Miss. NG Zabul Agricultural Development Team helps villages in the Tarnek wa Jaldak district of Zabul...

  • Members of the Mississippi National Guard provide security for their team during a karez inspection in Terwoki, Afghanistan, Dec. 14, 2012.  The Miss. NG Zabul Agricultural Development Team helps villages in the Tarnek wa Jaldak district of Zabul province, inspect their karez systems for damage and then loans the villages the equipment needed for repairs.  A karez is a system of underground channels that carry water from the aquifer at higher elevations to areas down slope.  (U.S. Army Photo by Sgt. Lori Bilyou)

    Ancient aqueducts receive cleaning

    Members of the Mississippi National Guard provide security for their team during a karez inspection in Terwoki, Afghanistan, Dec. 14, 2012. The Miss. NG Zabul Agricultural Development Team helps villages in the Tarnek wa Jaldak district of Zabul...

  • An Afghan villager inspects the rope that will be used by the Zabul Agricultural Development Team to descend into the karez in Zabul province Afghanistan, Dec. 14, 2012.  The Zabul ADT helps villages in the Tarnek wa Jaldak district of Zabul province inspect their karez systems for damage and then loans the villages the equipment needed for repairs.  A karez is a system of underground channels that carry water from the aquifer at higher elevations to areas down slope.  (U.S. Army Photo by Sgt. Lori Bilyou)

    Ancient aqueducts receive cleaning

    An Afghan villager inspects the rope that will be used by the Zabul Agricultural Development Team to descend into the karez in Zabul province Afghanistan, Dec. 14, 2012. The Zabul ADT helps villages in the Tarnek wa Jaldak district of Zabul province...

  • Mississippi National Guard member Staff Sgt. Robert E. Krebs, 26, from Ocean Springs, Miss., brings rope to descend into a karez in Zabul province, Afghanistan, Dec. 14, 2012.  Krebs is the noncommissioned officer in charge of security forces for the Zabul Agricultural Development Team's Mescal Detachment.  The Zabul ADT helps villages in the Tarnek wa Jaldak district of Zabul province inspect their karez systems for damage and then loans the villages the equipment needed for repairs.  A karez is a system of underground channels that carry water from the aquifer at higher elevations to areas down slope.  (U.S. Army Photo by Sgt. Lori Bilyou)

    Ancient aqueducts receive cleaning

    Mississippi National Guard member Staff Sgt. Robert E. Krebs, 26, from Ocean Springs, Miss., brings rope to descend into a karez in Zabul province, Afghanistan, Dec. 14, 2012. Krebs is the noncommissioned officer in charge of security forces for the...

  • Village leaders and members of the Mississippi National Guard Zabul Agrigricultrual Development Team inspect a karez in Zabul province Afghanistan, Dec. 14, 2012.  The Zabul ADT helps villages in the Tarnek wa Jaldak district of Zabul province inspect their karez systems for damage and then loans the villages the equipment needed for repairs.  A karez is a system of underground channels that carry water from the aquifer at higher elevations to areas down slope.  (U.S. Army Photo by Sgt. Lori Bilyou)

    Ancient aqueducts receive cleaning

    Village leaders and members of the Mississippi National Guard Zabul Agrigricultrual Development Team inspect a karez in Zabul province Afghanistan, Dec. 14, 2012. The Zabul ADT helps villages in the Tarnek wa Jaldak district of Zabul province inspect...

  • Mississippi National Guard member 2nd Lt. Philip Cleek, 25, from Winchester, Tenn., talks with a village leader about the village's karez in Terwoki, Afghanistan, Dec. 14, 2012.  A karez is a system of underground channels that carry water from the aquifer at higher elevations to areas down slope.  Cleek is the officer in charge of the Mississippi NG Agricultural Development Team's Mescal Detachment, in Zabul province.  (U.S. Army photo by Sgt. Lori Bilyou)

    Ancient aqueducts receive cleaning

    Mississippi National Guard member 2nd Lt. Philip Cleek, 25, from Winchester, Tenn., talks with a village leader about the village's karez in Terwoki, Afghanistan, Dec. 14, 2012. A karez is a system of underground channels that carry water from the...

  • Mississippi National Guard member, Sgt. Josh Niolet, 29, from Raleigh, Miss., provides security during a karez inspection in Zabul province, Afghanistan, Dec. 14, 2012.  The Miss. NG Zabul Agricultural Development Team helps villages in the Tarnek wa Jaldak district of Zabul province inspect their karez systems for damage and then loans the villages the equipment needed for repairs.  A karez is a system of underground channels that carry water from the aquifer at higher elevations to areas down slope.  (U.S. Army Photo by Sgt. Lori Bilyou)

    Ancient aqueducts receive cleaning

    Mississippi National Guard member, Sgt. Josh Niolet, 29, from Raleigh, Miss., provides security during a karez inspection in Zabul province, Afghanistan, Dec. 14, 2012. The Miss. NG Zabul Agricultural Development Team helps villages in the Tarnek wa...

  • Children from Terwoki village check out the karez cleaning equipment dropped off by members of the Mississippi National Guard in Zabul province, Afghanistan, Dec. 14, 2012.  The Miss. NG Zabul Agricultural Development Team helps villages in the Tarnek wa Jaldak district of Zabul province inspect their karez systems for damage and then loans the villages the equipment needed for repairs.  A karez is a system of underground channels that carry water from the aquifer at higher elevations to areas down slope.  (U.S. Army Photo by Sgt. Lori Bilyou)

    Ancient aqueducts receive cleaning

    Children from Terwoki village check out the karez cleaning equipment dropped off by members of the Mississippi National Guard in Zabul province, Afghanistan, Dec. 14, 2012. The Miss. NG Zabul Agricultural Development Team helps villages in the Tarnek...

  • Girls from the village watch as members of the Mississippi National Guard unload equipment for karez cleaning in Zabul province, Afghanistan, Dec. 14, 2012.  The Miss. NG Zabul Agricultural Development Team helps villages in the Tarnek wa Jaldak district of Zabul province inspect their karez systems for damage and then loans the villages the equipment needed for repairs.  A karez is a system of underground channels that carry water from the aquifer at higher elevations to areas down slope.  (U.S. Army Photo by Sgt. Lori Bilyou)

    Ancient aqueducts receive cleaning

    Girls from the village watch as members of the Mississippi National Guard unload equipment for karez cleaning in Zabul province, Afghanistan, Dec. 14, 2012. The Miss. NG Zabul Agricultural Development Team helps villages in the Tarnek wa Jaldak...

  • A villager from Terwoki takes away karez cleaning equipment dropped off by members of the Mississippi National Guard in Zabul province, Afghanistan, Dec. 14, 2012.  The Miss. NG Zabul Agricultural Development Team helps villages in the Tarnek wa Jaldak district of Zabul province inspect their karez systems for damage and then loans the villages the equipment needed for repairs.  A karez is a system of underground channels that carry water from the aquifer at higher elevations to areas down slope.  (U.S. Army Photo by Sgt. Lori Bilyou)

    Ancient aqueducts receive cleaning

    A villager from Terwoki takes away karez cleaning equipment dropped off by members of the Mississippi National Guard in Zabul province, Afghanistan, Dec. 14, 2012. The Miss. NG Zabul Agricultural Development Team helps villages in the Tarnek wa Jaldak...

  • Mississippi National Guardsman, Sgt. Bradley Thomas from Noxapater, Miss., provides security in Terwoki village while other members of the Miss. NG Agricultural Development Team unload karez cleaning equipment in Zabul province, Afghanistan, Dec. 14, 2012.  The Zabul ADT helps villages in the Tarnek wa Jaldak district of Zabul province inspect their karez system for damage and then loans the villages the equipment needed for repairs.  A karez is a system of underground channels that carry water from the aquifer at higher elevations to areas down slope.  (U.S. Army Photo by Sgt. Lori Bilyou)

    Ancient aqueducts receive cleaning

    Mississippi National Guardsman, Sgt. Bradley Thomas from Noxapater, Miss., provides security in Terwoki village while other members of the Miss. NG Agricultural Development Team unload karez cleaning equipment in Zabul province, Afghanistan, Dec. 14...

  • Local villagers and Mississippi National Guard members, Sgt. Josh Niolet, 29, from Raleigh, Miss., and Sgt. Paul Marshall, 43, from Terry, Miss., peer into a karez from above while other Miss. NG members of the Zabul Agricultural Development Team inspect the karez for damage in Terwoki, Afghanistan, Dec. 14, 2012.  A karez is a system of underground channels that carry water from the aquifer at higher elevations to areas down slope.  (U.S. Army Photo by Sgt. Lori Bilyou)

    Ancient aqueducts receive cleaning

    Local villagers and Mississippi National Guard members, Sgt. Josh Niolet, 29, from Raleigh, Miss., and Sgt. Paul Marshall, 43, from Terry, Miss., peer into a karez from above while other Miss. NG members of the Zabul Agricultural Development Team...

TARNEK WA JALDAK, Afghanistan - Subterranean aqueducts, or karez in Persian, have provided rural Afghan villages with water for centuries in a land perpetually challenged with poor resources. In many places throughout the war torn country, however, karez have fallen into disrepair. The Mississippi National Guard Agricultural Development Team is working in Zabul province, Afghanistan, to help villagers repair the problems caused by years of neglect.

Karez are built by boring a series of wells and tunnels into an aquifer. Water infiltrates from the aquifer into the bored wells and tunnels and is then conducted by gravity over declining elevation in a system of underground channels.

Karez can extend for miles through the countryside and move water, protected from evaporation in the arid climate of southern Afghanistan, to surface canals and eventually reservoirs or basins.

Rural Afghans use the collected water for everything from cooking to crop irrigation.

While the system remains fairly efficient, it does require upkeep. The ADT helps villages evaluate what type of work is needed to repair and maintain their karez.

Periodically, the silt must be cleared to prevent it from clogging the channels. Additionally, the walls of the karez often need to be reinforced or redug after a cave in.

"Sediment builds up over time," said Sgt. Bradley Thomas, a security force member of the ADT. "We look for blockages in the karez and any signs of collapsing in the karez walls."

After evaluating the karez's condition, the ADT loans the villagers the equipment to make the necessary repairs and picks it up again when the project's complete.

"We periodically check on their progress when we visit," said Sgt. Paul Marshall, an agricultural specialist with the ADT. "A lot of times villages cooperate and pass the equipment."

Villages working together to make karez repairs is common because often karez provide water to villages located near one another. It is also common for the ADT to drop off gear to villages that are higher or lower on the same karez.

The amount of time a village needs the equipment depends on the length of karez that the village is responsible for and the extent of the required repairs.

"A village may keep equipment for a month, or they might keep it the whole winter," Marshall said. "It just depends."

The Zabul ADT has currently dropped of three sets of karez cleaning equipment to various villages throughout the Tarnek Wa Jaldak district of Afghanistan. They plan to drop off four additional sets in the near future.

Page last updated Sat January 5th, 2013 at 02:09