Drosera Meadow is 7.03 ha in area located 3.79 km northeast

of Crane Flat at 2070 m elevation, and Mono Meadow is 5.69 ha at 2080 m elevation, 21.6 km southeast selleck inhibitor of Crane Flat (Fig. 1). The Crane Flat pumping well is located at the edge of the fen (Fig. 1). The well is 122 m deep, with the upper 15 m of borehole sealed with a solid steel casing, while the bottom 107 m is uncased. The casing was built to be a sanitary seal preventing surface water and near surface groundwater from leaking into the well casing. The pump intake is at 98 m depth (Crews and Abbott, 2005) and has a maximum production of 127–137 L/min. Packer testing conducted by Crews and Abbott (2005) indicated that the vast majority of pumped water comes from the upper portion of the well, above a depth of 27.7 m. Below this depth, the fractured granite has very low permeability and does not contribute significant water volumes during pumping. Therefore, the productive interval of the well is between 15 and 27.7 m below ground surface (bgs). During the summer period of high water demand, pumping occurs

for 8–12 h each night, to produce 60,000–100,000 L for storage. On an annual basis the largest volumes of water are needed in July and August, particularly weekends when visitation is highest. Precipitation and snow-water-equivalent data, recorded at the Gin Flat weather station (37°46′1″ N, 119°46′23″ W), located ∼4 km northeast PI3K inhibition of Crane Flat near Drosera Meadow, was obtained from the California Department of Water Resources (http://cdec.water.ca.gov). During the study period of water years 2004–2010 peak snow water

equivalent (SWE) ranged from 39.7 to 107.5 cm, and the timing of peak was as early as 9 March and as late as 19 April (Table 1). A water year as defined by the U.S. Geological Survey is the 12-month period between 1 October and 30 September designated by the calendar year in which it ends. We collected and analyzed water table levels and hydraulic heads, as well as soil and vegetation composition data in Crane Flat Meadow, and the two reference sites from 2004 to 2010 (Fig. 1). A total of 57 monitoring wells and piezometers were installed in Crane Flat in June 2004. Nests of two or more instruments (a well and one or more Doxacurium chloride piezometers) were installed in the peat body near the Crane Flat pumping well to determine differences in pumping response at different depths. We do not present the entire 57-well dataset, but use a representative subset of the data from wells with long, high quality records. Monitoring wells were installed by hand-augering 10 cm diameter bore holes and fitting them with 5 cm inside-diameter fully slotted Schedule 40 PVC pipe, capped on the bottom, backfilled around the pipe with native soil, and bailed to develop the water flow to the well. In fen areas where the peat layer exceeded 20–40 cm in thickness, monitoring wells were installed completely within the peat body.