Arroyo de en Medio

Coordinates: 37°29′35″N 122°27′36″W / 37.492996°N 122.459977°W / 37.492996; -122.459977
Source: Wikipedia, the free encyclopedia.
Mouth of Arroyo de en Medio, where it enters the Pacific Ocean

Arroyo de en Medio (Spanish for "in the middle creek") is a 2.5-mile-long (4.0 km)

Half Moon Bay at the location of the unincorporated community of Miramar at Miramar Beach. The watershed of Arroyo de en Medio consists of relatively permeable sandy soils capable of significant recharge to its aquifers, which supply considerable potable water
to the local area. Arroyo is Spanish for creek; de en Medio means literally "of in between" but a closer more functional translation may be in the middle.

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.

Vegetation at the mouth of Arroyo de en Medio

The streambed at the mouth is essentially covered by water dependent plant species. These include

riparian corridor under the strict meaning defined by the San Mateo County Local Coastal Plan[5]

37°29′35″N 122°27′36″W / 37.492996°N 122.459977°W / 37.492996; -122.459977[6]

See also

References

  1. ^ 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
  2. ^ "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.
  3. ^ Geoconsultants Inc., Annual report 1988-1989: Groundwater Resources, Half Moon Bay, California, prepared for the city of Half Moon Bay (1989)
  4. ^ Earth Metrics Inc., Arroyo de en Medio mouth survey, Miramar, California, prepared for the County of San Mateo (1989)
  5. ^ County of San Mateo Local Coastal Plan, San Mateo County Planning Department (1988)
  6. ^ U.S. Geological Survey Geographic Names Information System: Arroyo De En Medio