Community Watershed Alliance

Community Watershed Alliance
of the Middle San Pedro Valley
Hydrogeologic Investigation

…an evolving team of stakeholders
working together to promote
the sustainable health of
our watershed.
Follow @cwateralliance

ARIZONA DEPARTMENT OF WATER RESOURCES

US GEOLOGICAL SURVEY

HYDROGEOLOGIC
INVESTIGATION

	AIRBORNE GEOPHYSICAL SURVEY A fixed-winged aircraft was used by ADWR and USGS to conduct an airborne electromagnetic survey in the area during March and April, 2006. Results of the survey defined the extent of silt, clay, sand and gravel. This information will help us to understand the potential for water availability in the area.	Objectives:
		1) Assess current state of knowledge, existing data collection networks, and determine needs for improvement.
		2) Define the shape, size and parameters of the groundwater system.
		3) Quantify the water budget including total water in storage, location and quantity of recharge, and evaluate historical changes.
		4) Evaluate groundwater quality in selected areas.
PROPOSED TIME LINE FOR STUDY 2005 - Begin study in October 2005-2009 - Data collection 2009 - Begin Ground Water Model 2010 - Publish report describing study results 2012 - Complete model and publish model report		5) Construct a predictive numerical model of the groundwater system that can be used by planners and water managers.
		6) Establish an on-going monitoring network.
		7) Inform the residents of the Middle San Pedro area about the hydrologic conditions.

		VISIT THE USGS WEBSITE FOR THE LATEST UPDATES: Jan 2013 Fact Sheet 2015 Release: Hydrology of the Middle San Pedro Watershed
AREAS RECEIVING SPECIAL ATTENTION The Narrows Kartchner Caverns Benson Proposed new residential development areas Known areas of water contamination