Castle Valley reviews draft Water Management Plan; meters, monitoring and watershed protections prioritized

Castle Valley officials and residents met in a public workshop Jan. 22 to review a draft Water Management Plan that consolidates decades of local water studies and recommends steps including household well metering, more monitoring and a watershed protections strategy.

The plan is intended to be a “living document” that ties together water-quality monitoring, groundwater studies and policy options for protecting the shared aquifer serving the town, Water Agent John Brew said. "Well, we're here tonight to review the draft water management plan," Brew said, introducing the session and inviting public questions.

Why it matters: Castle Valley relies on a valley-fill aquifer whose safe-yield and long-term condition have been studied intermittently since the 1990s. Participants said several threats to supply and quality arise on lands outside town boundaries—including BLM acreage, private large holdings and county-zoned land—and that local protections will likely require coordination with county and federal agencies.

Discussion highlights

- Metering and metering pilot. Town advisers and residents discussed starting a metering program for wells that currently receive town allocations. Brew and others said metering is likely to be required by state authorities in coming years and that early, locally chosen approaches could be cheaper and less invasive than future mandates. Brew recommended portable or electronic approaches (for example, vibration totalizers or clamp-on flow sensors tied to pump controllers) as lower-impact first steps rather than digging inline meters.

- Monitoring wells and stream gaging. Panelists recommended resuming and expanding groundwater monitoring, including semiannual monitoring of existing Utah Geological Survey (UGS) wells and adding a gaging station on Upper Castle Creek to better track aquifer health and surface‑groundwater interaction.

- Watershed protection outside town limits. Several participants stressed that many threats originate on lands outside the municipal boundary and urged the town to press Grand County and federal land managers to include Castle Valley in a Watershed Protection Overlay District (WSPOD) or otherwise address watershed impacts. Brew described prior efforts to seek inclusion in county overlay protections and said county land-use revisions might present another opportunity to secure protections.

- Water rights, safe yield and banking. Speakers reviewed past studies (a 1990s study that was cited in the meeting and later studies including a 2006 Ford report and an HSA/Van der Heide compilation) and said the latest UGS study—underway with a report due next summer—should provide an “authoritative” safe-yield estimate. Brew and others discussed the possibility that the town holds more water rights on paper than residents use in practice; they raised water-banking or leasing as future tools to manage surplus rights while protecting flows needed for water quality.

- Water quality and E. coli screening. Participants raised recent sampling indicating elevated E. coli in parts of Castle Creek. Sam Taylor (author of a draft water-quality report, as discussed at the meeting) was reported to be finalizing a draft and expected to share details with town staff. Attendees recommended adding a short, referenced note about E. coli and related monitoring and best-management practices to the plan once the draft report is available.

- Service, delivery and fill stations. The plan includes discussion of options for water delivery or a public filling station; participants noted potential legal and cost constraints (potable-water delivery, trucking, source identification and treatment) and suggested exploring contractor models or a town-operated fill station with on-site treatment as a longer-term option.

Questions of priority and equity

A written question from resident David Harris prompted discussion about priority of town-issued allocations if restrictions become necessary. Brew summarized the town’s authority: town allocations can be reallocated under the town’s water-use ordinance and, in a shortage scenario, the town could exercise seniority from its parent water rights while seeking an equitable reduction for users. Brew noted a 2009 Utah Supreme Court decision (discussed at the meeting) that has, to date, protected municipalities’ vested water rights even without demonstrated historic use, but he cautioned that statewide policy could change over time.

Next steps and process

Participants and staff said the Water Advisory Committee will meet to integrate the workshop input into the draft and expects to present a revised plan to the Castle Valley council at its February meeting. No ordinance or formal regulatory mandate was adopted at the workshop; attendees described the draft plan as guidance and recommended adopting it by resolution to create a public record and facilitate future funding and implementation steps.

Ending

Brew and the committee urged continued public involvement and recommended targeted follow-ups (a technical presentation on the E. coli draft report, a metering pilot or test installs and pursuing more monitoring funds). "It will be a living document," Brew said. The water committee plans to revise the draft with tonight’s input and return it to the council for consideration in February.