Erosion Control and Flooding Issues from 1511 Garner, Austin, Texas

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  12 Mar 2007 event (before McMansion construction)
  26 Jul 2007 event (flooding after McMansion construction)
  27 Jul 2007 event (aftermath of flooding)
  22 Mar 2014 event (artificial turf being installed)



Event 1 - 12 Mar 2007 (before McMansion construction)

This is before McMansion construction. The old small house is being demolished. Notice how far from the back fenceline it was and how much grass was between.

Photo 1 (no erosion controls) Photo 2 (no erosion controls; sediment in gutter)
 
 



Event 2 - 26 Jul 2007 (flooding after McMansion construction)

This is from a 1-3/4" rainfall while the McMansion was being constructed. There is so much runoff, even two silt fences could not filter it. The runoff flows through the backyard of 1510 Oxford and 1512 Oxford and exits through the driveway of 1510 Oxford.

Photo 1 (backyard of 1511 garner; erosion controls mostly ineffective) Photo 2 (backyard of 1511 garner; erosion controls mostly ineffective
 
 
Photo 3 (backyard of 1511 garner; erosion controls mostly ineffective Photo 4 (backyard of 1511 garner; erosion controls mostly ineffective
 
 
Photo 5 (muddy water from 1511 Garner flowing into 1510 Oxford backyard) Photo 6 (muddy water from 1511 Garner flowing through 1512 Oxford backyard)
 
 
Photo 7 (muddy water from 1511 Garner flowing along side of 1510 Oxford shed) Photo 8 (muddy water from 1511 Garner flowing through 1512/1510 Oxford)
 
 
Photo 9 (muddy water from 1511 Garner flowing down 1510 Oxford driveway) Photo 10 (all of this from only a 1-3/4" rain)
 
 



Event 3 - 27 Jul 2007 (aftermath of flooding)

The day after the 26 Jul 2007 event. Water was standing in the backyard by fence and had flowed into the shed. It was also standing around the back of the house. Even the Memorial Day rains of 1981 which did cause some flooding at 1510 Oxford did not cause this much flooding.

Photo 1 (water standing in backyard by fence; it flowed into the back shed) Photo 2 (water standing at the back of the house)
 
 
 
Photo 3 (water standing at the back of the house)  
 
 



Event 4 - 22 Mar 2014 (artificial turf being installed)

Grass which used to surround the pool in the backyard of 1511 Garner is being replaced with artificial turf which has a rubber backing. Although the manufacturer claims the artificial turf is permeable, it has a much higher runoff coefficient than natural grass. It is probably is less permeable than a wood deck over permeable ground which is counted as 50% impervious cover by the City. Flooding from 1511 Garner is now routine.

 
Photo 1 (artificial turf with rubber backing)  
 
 



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