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Falling aquifer triggers Stage 1 water restrictions


SUBMITTED REPORT

The city of San Marcos will re-enter Stage 1 water restrictions on Monday, April 23 as the Edwards Aquifer continues to decline due to insufficient rain and high aquifer demand.

Stage 1, which limits lawn watering to once a week on designated days and other restrictions, take effect today. The restrictions had been lifted in mid-February with the warning that they would likely be re-imposed without significant rainfall.

“Even though we have experienced good rainfalls this winter and spring, it has not been enough to help the Edwards Aquifer recover from nearly two years of extreme drought conditions,” said Tom Taggart, the Public Services division executive director.

He issued the order to implement Stage 1 Wednesday after the index well in San Antonio reached a daily level of 657.1 feet above sea level, bringing the 10 day average to 659.9. The aquifer has been dropping at a rate of a foot or more a day recently.

The Edwards Aquifer Authority declared Stage 1 mandatory pumping reductions Wednesday for the San Antonio pool of the Edwards Aquifer. The City of San Antonio has already entered Stage 1 restrictions and the Uvalde Pool of the region is in Stage 2.

San Marcos and the San Antonio pool of the Edwards Aquifer enter the Stage 1 critical period affecting outdoor watering, car washing, swimming pools and other uses when one of three conditions occurs over a 10-day rolling average:

  1. The Edwards Aquifer falls below 660 feet on a 10-day rolling average at the J-17 index well in San Antonio
  2. San Marcos springflow drops below 96 cubic feet per second (cfs)
  3. Comal Springs in New Braunfels fall below 225 cfs

San Marcos spring flows were recorded at 216 cfs and Comal springs at 276 cfs on Wednesday.

The Edwards Aquifer, the underground source of water for more than 2 million Central Texans, also produces the San Marcos and Comal Rivers. The region was under drought restrictions for much of 2011, beginning in April last year and reaching Stage 2 restrictions in the summer.

San Marcos draws about 20 percent of its annual water supply from the Edwards Aquifer and 80 percent from surface water from Canyon Lake.

Stage 1 Water Restrictions

Monday for addresses ending in 0 or 1.
Tuesday for addresses ending in 2 or 3.
Wednesday for addresses ending in 4 or 5.
Thursday for addresses ending in 6 or 7.
Friday for addresses ending in 8 or 9.

The San Marcos ordinance has four critical stages based on the severity of drought conditions. Aquifer users in the San Antonio pool are required by the Edwards Aquifer Authority to reduce pumping by 20 percent in Stage 1.

Those violating the restrictions are subject to criminal penalties ranging from $100 to $2,000 and civil penalties up to $1,000.

For information about current drought status and rules, please visit the website at http://www.sanmarcostx.gov/water/ or call Jan Klein, Conservation Coordinator, at (512) 393-8310. Aquifer levels and springflow conditions are published daily on the EAA website at www.edwardsaquifer.org

1 Comment (Open | Close)

1 Comment To "Falling aquifer triggers Stage 1 water restrictions"

#1 Comment By Tarl On 04/23/2012 @ 2:58 pm

I don’t understand why we just don’t keep Stage 1 restrictions in effect all the time. When rain is falling, then people shouldn’t have to water their grass at all, let alone once a week. And when we’re not getting rain, we should be conserving water so we’re not drawing down the aquifer by a foot per day.

The only gotchas to that plan are the restrictions for new decorative water features. Clearly, that ban should be lifted in times when we’re getting rain.