Arroyo de en Medio
Arroyo de en Medio (Spanish for "in the middle creek") is a 2.5-mile-long (4.0 km)
Groundwater
In the headwaters area, coarse grained
Mouth
At the mouth of Arroyo de en Medio, the stream cuts through a flat marine terrace plain of alluvium, forming steep sided banks of approximately 40 degrees with respect to the channel floor; the channel floor is about eight meters deep relative to the bank tops. Even at the mouth, Arroyo de en Medio is considered intermittent, since the flow typically ceases in the summer months. However, there is some summer standing water in the channel near the mouth, the result of street runoff from summer irrigation and car washing. The stream mouth is clear of canopy vegetation but densely filled with sedges in a marshy setting.
The streambed at the mouth is essentially covered by water dependent plant species. These include
37°29′35″N 122°27′36″W / 37.492996°N 122.459977°W[6]
See also
References
- ^ U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map Archived 2012-03-29 at the Wayback Machine, accessed March 15, 2011
- ^ "Balance Hydrodgeologics Inc., San Mateo County Mid-Coast Aquifers: Literature Review, prepared for San Mateo county Board of Supervisors (2002)" (PDF). Archived from the original (PDF) on 2007-07-21. Retrieved 2007-02-01.
- ^ Geoconsultants Inc., Annual report 1988-1989: Groundwater Resources, Half Moon Bay, California, prepared for the city of Half Moon Bay (1989)
- ^ Earth Metrics Inc., Arroyo de en Medio mouth survey, Miramar, California, prepared for the County of San Mateo (1989)
- ^ County of San Mateo Local Coastal Plan, San Mateo County Planning Department (1988)
- ^ U.S. Geological Survey Geographic Names Information System: Arroyo De En Medio