Saturday, April 23, 2016

Lake Ivie Up 8,500 Acre Feet: Reduces Pressure on Twin Buttes


Since San Angelo's City Council declared Drought Level I restrictions most area lakes received beneficial runoff rains.  Lake Nasworthy went from 8,010 acre feet to 8,529, an increase of over 500 acre feet.


Lake Ivie went from 66,866 acre feet to 75,410.  That's 8,500 acre feet higher from beneficial rains. Add Twin Buttes North Pool rise of 1,570 acre feet (from 15,410 to 16,987 acre feet) and the City has over seven additional months of water.   In addition Twin Buttes South Pool holds roughly 6,000 acre feet

Staff went to City Council with a very conservative "26 months of water" left.  That's now 33 months.  This is a blessing for our community.  We'll see when Council reconsiders their Drought Level 1 designation.

Update 4-24-16:  As of this morning Ivie holds 75,700 acre feet of water.

Update 4-26-16:  Ivie is now up nearly 10,000 acre feet with storms in the area. 

Thursday, April 14, 2016

Twin Buttes Up Nearly 3 Feet


Twin Buttes Reservoir's North Pool is up nearly three feet from December levels. This is due to steady flow from the South Concho River and two creeks, Dove Creek and Spring Creek. Twin Buttes is the only lake in the city's water supply arsenal to rise over this period. Weather predictions call for a wet weekend with potential runoff.


The National Weather Service issued a Special Weather Statement:

HEAVY RAIN POSSIBLE THIS WEEKEND ACROSS MUCH OF WEST CENTRAL TEXAS...

A POTENT UPPER LEVEL SYSTEM WILL APPROACH WEST CENTRAL TEXAS THIS WEEKEND... BRINGING WIDESPREAD SHOWERS AND THUNDERSTORMS.  WHAT YOU NEED TO KNOW... 

1. THE MOST WIDESPREAD AND HEAVIEST RAINFALL IS MOST LIKELY SATURDAY NIGHT THROUGH SUNDAY NIGHT. 

2. RAINFALL TOTALS OF 1 TO 3 INCHES ARE LIKELY... WITH TOTALS OVER 4 INCHES POSSIBLE IN SOME LOCATIONS. 

3. WITH SOILS STILL WET FROM THE RAIN ON TUESDAY... RAINFALL THIS WEEKEND SHOULD QUICKLY SATURATE THE SOIL. FLOODING OF LOW LYING AREAS... LOW WATER CROSSINGS... AND OTHER POOR DRAINAGE AREAS WILL BE POSSIBLE DURING THE HEAVIEST RAINFALL. 
IN ADDITION... ALTHOUGH THE HEAVY RAINFALL IS THE GREATEST THREAT... A FEW STORMS REACHING SEVERE LEVELS CAN NOT BE RULED OUT. THE STORM SYSTEM WILL BE SLOW TO MOVE... SO SOME CHANCE OF RAIN WILL LINGER WELL INTO NEXT WEEK. RESIDENTS OF WEST CENTRAL TEXAS SHOULD BE PREPARED FOR A VERY WET WEEKEND
A blessing may be on its way.

Tuesday, March 8, 2016

Twin Buttes to Get Runoff


The National Weather Service issued a Flood Advisory until 6:00 am.  It included the following:

AT 253 AM CST... DOPPLER RADAR INDICATED HEAVY RAIN DUE TO THUNDERSTORMS. THIS WILL CAUSE URBAN AND SMALL STREAM FLOODING IN THE ADVISORY AREA. BETWEEN ONE HALF AND ONE INCH OF RAIN HAS FALLEN ACROSS MUCH OF THE WARNED AREA AND AN ADDITIONAL ONE HALF TO ONE INCH IS POSSIBLE. MINOR FLOODING WILL BE POSSIBLE... ESPECIALLY ACROSS ROADWAYS... LOW WATER CROSSING AND LOW LYING AREAS. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... SAN ANGELO... CHRISTOVAL... WALL... KNICKERBOCKER... TANKERSLEY... VERIBEST... GRAPE CREEK... US-67 NEAR THE IRION- TOM GREEN COUNTY LINE AND HARRIET. 
The South Concho runs through Christoval.  The Equalization Channel will flow harder with any runoff.  The North Pool is fed by flooding at US-67 near the Irion-Tom Green County line.

From my look at the radar there is potential for training from the line of thunderstorms.  It could be a real runoff event, but we'll take anything the Lord provides.

Monday, February 22, 2016

Rain Hits Concho Valley


The Equalization Channel at Twin Buttes Reservoir had already been flowing before storms hit the region this evening.  We shall see how much runoff makes its way into Twin Buttes North and South Pools. 

Sunday, October 25, 2015

City Should Have Nearly $500,000 for Twin Buttes in 2016


The City of San Angelo's Comprehensive 2014 Annual Financial Report indicated

San Angelo Water Supply Corporation
 
Project Name: Twin Buttes Dam and Reservoir (Twin Buttes) - Annual Payments of $450,000 to $470,000 are required through the year 2015 for the retirement of the contractor's debt. Total estimated payments are $16,327,293. The City is contractually obligated to operate and maintain the project storage works and the basic recreational facilities for the useful life of the project.
Payments will stop in 2016 finally freeing up money for the city to use on the Twin Buttes Master Recreation Plan.  The City can simply take the money it has been paying for Twin Buttes and use it to improve recreational conditions at Twin Buttes.

The City received an excellence award for the 2014 CAFR.  It should put the same energy toward getting a recreational excellence award at Twin Buttes.

City Parks Director Carl White spoke about Twin Buttes at Council's 10-6-15 meeting.  He said:

"To be honest I don't think we're doing a very good job of managing those properties right now.  It's a little hands off.  We think we need to improve that."
The city should have an extra $450,000 to $470,000 to do just that.

Friday, October 23, 2015

OC Fisher Up Over Four Feet


With floodwaters still miles away in Carlsbad and Grape Creek Lake O. C. Fisher rose four feet. That wipes out this summer's evaporation.  Thank heaven for the blessing.

Update 10-25-15:  O.C. Fisher is now up 6.5 feet at 1877 feet elevation.

Thursday, October 8, 2015

First Soaking Rain


Might it be enough to prime the South Pool for flow into the Equalization Channel?