Lithium in groundwater used for drinking-water supply in the United States

Lithium concentrations in untreated groundwater from 1464 public-supply wells and 1676 domestic-supply wells distributed across 33 principal aquifers in the United States were evaluated for spatial variations and possible explanatory factors. Concentrations nationwide ranged from <1 to 396 μg/L (median of 8.1) for public supply wells and <1 to 1700 μg/L (median of 6 μg/L) for domestic supply … Continue reading “Lithium in groundwater used for drinking-water supply in the United States”

Tracking California’s sinking coast from space: Implications for relative sea-level rise

Coastal vertical land motion affects projections of sea-level rise, and subsidence exacerbates flooding hazards. Along the ~1350-km California coastline, records of high-resolution vertical land motion rates are scarce due to sparse instrumentation, and hazards to coastal communities are underestimated. Here, we considered a ~100-km-wide swath of land along California’s coast and performed a multitemporal interferometric … Continue reading “Tracking California’s sinking coast from space: Implications for relative sea-level rise”

Rain Making

I SHALL ask your attention this evening to the scientific principles which are involved in the condensation of atmospheric vapor, and to some of the attempts which have been made to produce this condensation by artificial means. Since the change from atmospheric vapor to water involves a change of the physical state of the same substance from a gas … Continue reading “Rain Making”

California’s Stream Flow Monitoring System Is Essential for Water Decision Making

With California’s drought risk, flood risk, and demand for water all increasing, effective monitoring is more important than ever to water decision making. Stream gages monitor the most basic vital sign of California’s waterways—stream flow.1 Stream flow data support day-to-day decisions about how to manage water and operate water infrastructure. In turn, those decisions have important … Continue reading “California’s Stream Flow Monitoring System Is Essential for Water Decision Making”