Vina Subbasin 2027 RMS Network Dashboard

26 polygons anchored by 31 RMS wells (13 North, 6 Chico — CWSCH01b/02/03/07 and the shallow wells CMW-102A and SWMW-06A, added at the Nov 4, 2026 joint Board meeting — plus 6 supplemental nested completions in Chico shown for hydrograph context, 12 South). The Chico polygon is the dissolved Chico management area — a single fixed boundary regardless of how many RMS wells are assigned to it. Three of the 13 North RMS wells physically sit inside the Chico mgmt area but their Thiessen cells are clipped to N proper (no overlap). Click a polygon to drive the hydrograph in §5.3 and the representativeness comparison in §5.4. Click a well marker for a metadata popup.

For the selected polygon, this view plots groundwater elevation traces for every well (RMS or supplemental) that falls inside the polygon footprint. Traces show QA-Good readings only — the same convention as the GSA consultant hydrographs and the strawman's SMC method ("excluding questionable measurements"). One flagged exception: at 22N01W05M001M, manual measurements lapsed 2005–2019 while the county operated a continuous recorder there, so a dotted recorder-derived series bridges that gap using each month's highest recorder reading (a static-level proxy; the DWR dataset grades recorder readings questionable as a class). It is display-only and excluded from every statistic on this page. MT / MO / IM-2027 threshold lines are shown for every 2027 RMS well — dashed where the 2022 GSP values carried forward, dotted where values are proposed (Aug 12, 2026 joint Board packet, Attachment B, Alternative 1; draft amended GSP, Table 3-1, at CMW-102A and SWMW-06A). Water levels at CMW-102A and SWMW-06A come from DTSC monitoring reports, which give no DWR grade. The 25 North and South RMS wells additionally get a proposed LML line driven by the slider below.

Same-month paired groundwater elevations (RMS well on x, comparison well on y) with a 1:1 reference line. Pearson R² and n are shown in the legend when at least 5 paired readings are available.