In the Rio Grande, low water levels have allowed salt water to enter and ocean species to crowd out freshwater fish. Excessive extraction, primarily for agriculture, is threatening the river, which flows along the U.S.-Mexican border.
At the same time, rising populations along both sides of the river need more and more water, increasing pressure on the 69 fish species found only in the Rio Grande, the WWF said.
Don't forget about the salt cedars (tamarisks) sucking up 300 gallons a day. If we could eradicate this invasive tree, we could take the wheels off the canoes.
