Anacostia Watershed Society Homepage

Site#	Date	Type	Possible Cause	Length(ft)	Height(ft)
227106	5/5/2005	widening	land use change	950	5

227108 (Unusual Condition) (N39.07295, W77.0377667)

A gully can be seen in picture 227108-1. There is no water flowing in this gully under dry-weather condition. When it rains, flushing stormwater flows down creating this gully. The area beyond the woods is developed.

Picture 227108-2 shows upstream of this Picture 227108-1. Flushing stormwater is forming a drop here.

228102 (Comment -no more Pipe Arch) (N39.0729833, W77.0437833)

This culvert (A.K.A. Pipe Arch) might become a fish barrier in the future. Stream flow might scour the river bed just after it is released from the culvert. This bridge looks relatively new. Even though it looks new, it seems to me that this construction is old fashioned from the environmental viewpoint. If we consider aquatic animals' habitat, the bridge should be arch shaped straddling from shore to shore.
Sadly, a similar pipe arch was installed for a bridge crossing the Paint Branch in SPA (Special Protection Area). Expensive future repairs to fix a fish barrier would not be necessary if the bridge had been designed environmentally friendly.

228105 (Erosion Site ) (N39.0741833, W77.04455)

Site#	Date	Type	Possible Cause	Length(ft)	Height(ft)
228105	5/5/2005	widening	land use change	633	5

Is this a stream or woods? This is part of a stream.