Email from California Coastal Commission We need your help to photograph king tides King Tides are Coming Soon! December 4th & 5th, 2025 and January 2nd & 3rd, 2026 Plus: Nov. 6th and Dec. 6th in Sout

Machine learning method counts nearly 12 million dead trees, many likely killed by rising seas

A groundwater crisis halted the construction of thousands of homes and pitted affordability against environmental concerns.

Tracer-aided mixing models are uniquely capable of identifying water flow paths and sources within the Critical Zone Recent advances offer novel tracers and models for deeper and more accurate in...

Current University of Arkansas System employees, including student employees and graduate assistants, need to log in to Workday via MyApps.Microsoft.com, then access Find Jobs from the Workday search ...

Abstract. Understanding when and why groundwater recharge occurs is of fundamental importance for the sustainable use of this essential freshwater resource for humans and ecosystems. However, accurately capturing this component of the water balance is widely acknowledged to be a major challenge. Direct physical measurements identifying when groundwater recharge is occurring are possible by utilizing a sensor network of hydrological loggers deployed in underground spaces located in the vadose zone. Through measurements of water percolating into these spaces from above, we can record the potential groundwater recharge process in action. By using automated sensors, it is possible to precisely determine when recharge occurs (which event, month, or season and for which climate condition). Combined with daily rainfall data, it is possible to quantify the “rainfall recharge threshold”, the amount of rainfall needed to generate groundwater recharge, and its temporal and spatial variability. Australia's National Groundwater Recharge Observing System (NGROS) provides the first dedicated sensor network for observing groundwater recharge at an event scale across a wide range of geologies, environments, and climate types representing a wide range of Australian hydroclimates. Utilizing tunnels, mines, caves, and other subsurface spaces located in the vadose zone, the sensors effectively record “deep drainage”, water that can move beyond the shallow subsurface and root zone to generate groundwater recharge. The NGROS has the temporal resolution to capture individual recharge events, with multiple sensors deployed at each site to constrain the heterogeneity of recharge between different flow paths, and to quantify (including uncertainty bounds) rainfall recharge thresholds. Established in 2022, the network is described here together with examples of data being generated.

YouTube video by Kenneth Befus

Beneath Australia's soils lie ancient aquifers which supply 30% of the water consumed across the country. The groundwater they hold can be some of the oldest water on the planet, dating back as far as...

On some High Plains nights, the wind drops to a hush and you can almost hear the aquifer below, a slow memory of Pleistocene storms moving through sand and silt.

This position is located in the River Forecast Center (RFC) with vacancies in each listed location. The RFCs keep watch over the nation's waterways to minimize loss of life and property damage from fl...

Global Groundwater Data Catalogue simplifies the process of identifying relevant datasets for interdisciplinary groundwater assessments.

Nature Cities - Groundwater-associated hazards in coastal cities can be as acute as surface flood hazards, but are often overlooked, more persistent and harder to identify. Here we discuss how...

Groundwater rise can mobilize toxic chemicals buried underground and increase the chance of chronic flooding.

A Bay Area representative wants to map rising groundwater, a hidden climate threat for the region that could flood infrastructure and spread pollution.