Las Trampas Creek flows through the Saint Mary's College seasonal swamp and it continues through the city of Lafayette. The creek is adjoining the Lafayette community park. Three student teams perform field mapping following the protocols of the Contra Costa County Watershed Monitoring program.
Access to Las Trampas Creek was arranged via the Contra Costa County Watershed Volunteer Coordinator and the city of Lafayette Parks District.
2008 Field Mapping
Mapping Activities:The county's GPS/GIS systems were synchronized and students previously received instruction on the protocols in the class. The hip waders were borrowed from the county to record the data. Student teams recorded stream and vegetation characteristics for this riparian cooridor, plus human influences on the creek. There was a limited amount of time for this service activity in 2008, so only 200 feet was mapped. ( www.cocowaterweb.org ).
2009 Field Mapping
Mapping Activities: Again the county's equipment was used. A full afternoon was alloted so more than 500 feet of this creek was mapped. The starting point was the ending point of the 2008 field mapping. The Las Trampas Creek was still rather deep in various places even though this last January was very dry. The riparian cooridor vegetation was vastly different from the marsh wetlands visited in the course and provided a good contrast.
2011 Field Mapping
Mapping Activities: The student worked a full afternoon and we finally completed mapping the creek to a location near the Lafayette Community Center. Due to all the rain, the banks were somewhat treacherous and Las Trampas Creek was deep in various places so students with borrowed hipwaders had to trek around certain portion of the creek.
A map of Las Trampas Creek will be added soon.