Lake Morena and San Diego's Water Supply

Shortly before the Governor declared an emergency state of drought in California, a question of supply arose.

In the news recently is a story about the ongoing drawdown of water from Lake Morena. To sum it all up, the City of San Diego has begun drawing water out of Lake Morena for water supply, while the County, which runs the public park surrounding Morena, is opposed to the drawdown because it claims less water in the reservoir means harm to the environment and fewer recreational opportunities.

So who is right? The City? The County?

Trick question, because there is no right or wrong answer. Lake Morena is a reservoir. This is one of the safeguards our region has against drought. And yet, as of January 27, 2014, Lake Morena is only 5.4% full, at a depth of 91 feet, out of 157 possible, so the limit to which this reservoir should be drawn seems pretty close. The Lake Morena situation shows just how complex water issues are in San Diego County.


Whether we’re dealing with drinking water supply, recreational use, or wastewater impacts on our environment, each of these issues is closely connected. And, we should expect to see more conflicts such as this one unless we change our thinking about water source and water usage.

For starters, California just had its driest year ever on record. Yes, you read that right. Less rainfall and snowpack means less water available to you and me. And for those who haven’t yet heard, the Governor declared a drought. And so our water providers look to our storage reservoirs to supply our needs.

Shouldn’t a reservoir that is at just 5.4% its capacity point strongly to a need for immediate and drastic action?

So where do we begin? Immediately: conserve. The governor called for voluntary 20% reductions and is considering mandatory restrictions. The Metropolitan Water District doubled its conservation budget to $40 million. Our County Water Authority has done nothing. It may be true that we have enough water to last the year, but what of the future? And what about the fact that most of our water comes from Northern California and the Colorado River, both of which are under dire strain? We must all voluntarily conserve now, even if the Water Authority won’t help us.

And then, a long-range plan. As it just so happens, the San Diego County Water Authority is working on developing a long-range water supply plan for our area, and it falls far short of being a usable document to lead us into a more sustainable water future. The Plan fails to promote recycling and conservation as its top priority. If we want to help alleviate situations like Lake Morena in the future, we should encourage the County to work with the cities of our area and stakeholders (such as San Diego Coastkeeper!) in the implementation of far greater conservation and potable water recycling on a large-scale.

What can you do?

1. Contact your County Water Representative and ask them to fund and support greater conservation and recycling measures than their Master Plan does.
2. Conserve water. You can make a difference today. Follow a conservative watering schedule, and capture and use the rain when it does fall. Here’s our Top Ten water conservation tips. We can all do our part to make San Diego a more water-friendly environment.