Water sample near Socorro, NM

SOCORRO, NM - Colin McDonald takes a water sample before paddling down the Rio Grande River between Socorro and San Antonio, New Mexico. AUGUST 25 2014: CREDIT: Erich Schlegel/Disappearing Rio Grande Expedition — SOCORRO, NM – Colin McDonald takes a water sample before paddling down the Rio Grande River between Socorro and San Antonio, New Mexico. AUGUST 25 2014: CREDIT: Erich Schlegel/Disappearing Rio Grande Expedition

SOCORRO, NM – Colin McDonald takes a water sample before paddling down the Rio Grande River between Socorro and San Antonio, New Mexico. AUGUST 25 2014: CREDIT: Erich Schlegel/Disappearing Rio Grande Expedition