The Colorado River Basin Region is located in the most arid area of California. Despite the relatively dry climate, the Region contains some substantial surface water bodies, including the Colorado River and the Salton Sea. Many of the alluvial valleys in the Region are underlain by ground water aquifers that in many cases are the sole source of water for local areas.

"The Clean Lakes Alliance (CLA) is a not-for-profit organization devoted to improving the water quality of the lakes, streams, and wetlands of the Yahara River watershed. We are a unique partnership of diverse stakeholders who are building on and expanding upon decades of ongoing efforts to preserve and restore our waters. Our goal is to raise community awareness of the issues facing the watershed,...

Every year hundreds of millions of litres of sewer water tainted with untreated sewage is dumped directly into the Ottawa River. The City of Ottawa has a plan to stop this appalling situation and Ecology Ottawa is working to make sure there is funding available to implement the plan.