Erosion Control Issues at Multiple Sites (Friday, July 9, 2021)

The following photos from 17 sites were taken between 6:30am and 7:30am on July 9, 2021 after an overnight rain. All but three of the sites are in the Zilker neighborhood (three are in Barton Hills). Eleven of the sites are in the Barton Springs Zone. There is evidence of sediment leaving the sites but much of it was swept away with the runoff and is no longer visible.

Back to erosion control issues on other dates.


1903 Collier

This site consistently fails to put controls across the driveway. There is evidence on the driveway apron that sediment was leaving the site.


Photo 1

1820 Ashby (in the Barton Springs Zone)

The triangular dike is falling apart so it doesn’t help much (Photo 1). There are no controls behind the privacy fence and sediment in the street (Photos 2 & 3). The silt fence is visibly blown out behind and at the bottom of the privacy fence (Photo 4).


Photo 1

Photo 2

Photo 3

Photo 4

1819 Spillman (in the Barton Springs Zone)

They have extended the silt fence up the driveway (Photo 1) but they still haven’t backfilled behind the silt fence (Photo 2). Failure to backfill will not matter too much if the rainfall amount is small, but during large events, the water will simply flow under the fence. They still haven’t cleaned up the mud that was released during previous events (Photo 3).


Photo 1

Photo 2

Photo 2

2206 Montclaire (in the Barton Springs Zone)

This site is at the corner of Montclaire and Rae Dell. This is going to be a continuing problem because of the slope. One set of mulch socks are likely to be ineffective on this slope, and there is a gap between the mulch socks and silt fence. Sediment is visible in the gutter on the far left.


Photo 1 - along Rae Dell Ave

2803 Oak Haven (in the Barton Springs Zone)

One end of the triangular dike is sitting on top of the mulch sock leaving a gap below it (Photo 1) and allowing sediment to escape (Photo 2). Some of the sediment could be coming from the rest of the lot which does not have controls all the way across (Photo 3). This site is in the Barton Hills neighborhood.


Photo 1

Photo 2

Photo 3

2802 Rae Dell (in the Barton Springs Zone)

Big gap between the silt fence and mulch sock allowing sediment to escape. This site is in the Barton Hills neighborhood.


Photo 1

2504 Cedarview (in the Barton Springs Zone)

The 2506 Cedarview site upstream has finally been landscaped so it won’t be a problem anymore, and 2504 Cedarview has, after all of these months, finally put up a silt fence that runs up the sides of the driveway. Inexplicably, however, their silt fence is mangled at the bottom of the right side of the driveway allowing sediment to escape which is visible in the street. This site is in the Barton Hills neighborhood.


Photo 1

2104 Ann Arbor (in the Barton Springs Zone)

The pile of mulch socks at the bottom of the driveway is not stopping sediment from leaving the site.


Photo 1

2109 Ann Arbor (in the Barton Springs Zone)

This is actually along Meadowridge. Part of the silt fence has been removed and not replaced (Photo 1). The mess in Photo 2 is self-explanatory.


Photo 1

Photo 2

2012 Oxford

This site continues to be a problem with no controls across much of the front.


Photo 1

2010 Oxford

Sediment is leaving the site across the driveway because controls do not run all the way up the driveway. The mulch socks on the right are not effective. The silt fence on the right side should turn and run all the way up to the wooden fence.


Photo 1

1711 Nash

They have no erosion controls. The erosion controls need to remain in place until final landscaping is complete.


Photo 1

Photo 2

1117 Bluebonnet (in the Barton Springs Zone)

These controls are inadequate. Sediment is escaping down the driveway. The erosion controls need to run up the length of the driveway. The sediment fence on the right is mangled.


Photo 1

809 Azie Morton

Another continuing problem. When the driveway controls are not in place, sediment leaves the property (Photo 1). The silt fence at the corner has been crushed (Photo 2).


Photo 1

Photo 2

1201 Azie Morton (in the Barton Springs Zone)

This site is a problem. These triangular dikes will not contain all of the muddy runoff coming from this very large and very steep site. The water will just run out the ends. In addition, the left dike is sitting up on the curb and water will just run under it. The silt fences need to be extended all the way up the driveway.


Photo 1

1209 Azie Morton (in the Barton Springs Zone)

Similar to 1201 Azie Morton, this is a very large, steep site. Mulch socks sitting on the large aggregate stone is not going to be very effective. The muddy water from uphill will just flow over and through the stones and under the mulch sock because of the space between the large aggregate stones.


Photo 1

1717 Valeria

This site still has no erosion controls.


Photo 1

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