Lower Pilarcitos Creek Groundwater Basin Study - Coastside ...

1997 (Nelson, 1997 and 1998). This report builds on and integrates previous work done
for the CCWD and City of Half Moon Bay, and other existing information.
Figure 1 defines three, telescoping study areas: the entire Pilarcitos Creek
watershed, the Lower Pilarcitos Creek groundwater basin, and the vicinity of the planned
wellfield. The Pilarcitos Creek watershed study area, encompassing 20,761 acres (or
32.44 square miles [mi 2 ]) above Half Moon Bay, allows accounting of all water that
enters the Lower Pilarcitos Creek groundwater basin. The groundwater basin,
encompassing 1,765 acres (or 2.76 mi 2 ) is the study area for a focused water balance in
which water inflows, outflows, and groundwater storage change are defined. The vicinity
of the proposed wellfield allows detailed consideration of wellfield operation and potential
impacts.
Acknowledgements
This report was prepared by Iris Priestaf, David W. Abbott, William Motzer, and
Alain Boutefeu of Todd Engineers and Bob Ryder of Kennedy/Jenks Consultants. We
acknowledge the assistance of the CCWD Board of Directors and CCWD staff,
particularly Ed Schmidt, General Manager and James Teter, CCWD Engineer. The
assistance of San Mateo County staff is appreciated.
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