Water Management Projects

Steering Committee
Mitigation Strategy for the Upper Deschutes Basin of Oregon

NEWTON committed time and resources to serve as a participant, providing assistance to the Deschutes Groundwater Steering Committee in developing a Mitigation Strategy for the middle Deschutes Basin. The purpose of the Strategy is to allow future groundwater permits for the growing region where potential effects of groundwater pumping are offset by mitigation projects approved by the Oregon Water Resources Department. David Newton made presentations to the committee on basin hydrogeology and was a work group leader assigned to evaluate mitigation opportunities and feasibility by use of basin infrastructure (i.e., irrigation districts, canal lining-piping, etc.).

Deschutes Groundwater Steering Committee
Mitigation Alternatives for Water Supply Development,
Upper Deschutes River Basin Oregon

Based on NEWTON’S work with the Committee, the Committee retained NEWTON on a consulting basis to conduct a more in-depth evaluation of middle Deschutes basin infrastructure alternatives for mitigation purposes. NEWTON conducted the evaluation and prepared the report “Evaluation of Infrastructure Alternatives in the Middle Deschutes Basin for Mitigation of Potential Groundwater Withdrawal Effects on the Deschutes River”, dated August 21, 2000.

Marion County
Water Resources Management Plan for Marion County

NEWTON helped Marion County prepare a water resources management plan to address long-term water supply and water quality concerns. Groundwater and surface water availability/demand were evaluated in the Upper Santiam, Lower Santiam, Pudding River and Willamette River watershed areas. Municipal and septic waste disposal, in-stream water rights, recreational needs and environmental concerns were also addressed. NEWTON’s work also included presentations, discussions and coordination with the Marion County Water Resources Management Council, and formulation of draft water policies for the comprehensive land use plan.

Grants Pass, Oregon
Josephine County Water Resources Dept. - Groundwater Management Program

NEWTON assisted the County and the City of Grants Pass with developing a groundwater management program. The agencies were concerned about water availability and the impacts of rapid growth and development on existing resources. Specific concerns included overuse of limited groundwater resources; the potential for septic systems to contaminate groundwater; and prioritizing City sewer service to urbanizing areas. The program was developed with input from the Oregon Department of Water Resources (OWRD).

Grants Pass, Oregon
Josephine County Water Resources Department
Water Resources Management Plan Work Program

The County Water Resources and Planning Departments needed a water resources management plan to provide a mechanism for responding to a number of local water issues. These issues related to conflicts between land use and water availability, water-quality impacts of mining and septic waste disposal, well interference, water shortages, damsite protection and ten other specific issues. NEWTON developed a Work Program for the County that assigned levels of concern so the issues could be ranked according to priority; prepared questions to answer for each issue to better define the concerns; determined parameters and data necessary to answer the questions; and provided guidelines for County staff to use in developing a Water Resources Management Plan on a continuing basis. In addition, a data management program was prepared that summarized existing information, determined the adequacy of the data to resolve water issue questions, identified additional data collection needs, and recommended a computer database system to use in monitoring and management decision-making.

Fairview, Oregon
Fairview Lake Outlet Works

Newton assisted the City of Fairview and the Multnomah County Drainage District No.1 to modernize the outlet control stop works for Fairview Lake with new slide gates. The existing outlet control stop logs were insufficient and proved difficult to raise and lower manually and the existing concrete housing was also eroding form time and the elements. The new outlet structured was widened to more than double its original width of 20 feet. The stop logs were replaced with 4 new modern slide gates. Each gate has the capability of being raised and lower by means of a control wheel which greatly increased the control of the amount of water that can be released form the lake. Some of the issues in constructing the new outlet structure was that a majority of the construction needed to take place next to and beneath and existing bridge with very little head clearance. Also the existing water level of the lake need to be maintained. This meant using an inflatable coffer dam and adding drainage pipes to handle the outlet water flow
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