Martis Valley Groundwater Management Plan - Placer County Water ...

3-3
Monitoring Network
Development of a full well monitoring network will be a long-term process that is based on the
scientific knowledge gained from the GMP and modeling effort that is currently underway. The
network is currently limited to monitoring wells owned by TDPUD. This network includes a
total of three wells that are presented in Table 3-1 along with pertinent well information. It is
expected that ideal monitoring locations as related to the issues bulleted above will be
scientifically resolved in the next few years. If existing wells, such as those shown in Figure 3-1,
meet the monitoring well requirements described below and can be made available, they will be
used. If existing wells cannot be used, the partners will seek funding and property rights to
construct designated monitoring wells in these locations. It is anticipated that desired new
monitoring sites will be prioritized based on value, availability of existing wells, feasibility of
installing new wells, and cost. This prioritization will ensure optimal value relative to these
constraints in establishing new monitoring locations until the full network is established.
3.3 MONITORING WELL REQUIREMENTS
The following are criteria for selecting monitoring wells in the MV groundwater basin. Wells
selected for monitoring should have:
A State Well Driller Log that describes the well construction details and a description of
the sediments encountered
A detailed description of the well’s location
A brief description of the well’s use (i.e. irrigation, residential)
A relatively short screen interval in only one aquifer
A sanitary seal to prevent surface water from entering the well
Wells cannot be municipal (public) production wells for water supply
The most desirable wells to be included in the monitoring network are wells with short screen
intervals completed within a specified aquifer. However, some wells with longer screen intervals
may need to be initially included in the network when no others are available. Wells with long
screen intervals may also be designated for monitoring because their long historic records
provide valuable trending information. Data obtained from the longer screen wells usually
represents an average of groundwater elevations across the unconfined and semi-confined
aquifers.