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Recent strengthening of eastern Pacific ENSO in the last millennium paleorecord

American Association for the Advancement of Science (AAAS) | August 27th, 2026

Summary

The Pacific El Niño–Southern Oscillation (ENSO) generates climate extremes that endanger ecosystems, infrastructure, and human well-being worldwide. The response of th

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Rewilding the upper Klamath River Basin: rapid recolonization of Chinook salmon following the world’s largest dam removal

Nature Portfolio (Springer Nature) | August 27th, 2026

Summary

Habitat fragmentation is a global driver of decline in biodiversity, yet evaluations of ecological response following re-connection remain rare. In 2024, four hydroelectr

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Water Quality Control Plan for the San Francisco Bay/Sacramento-San Joaquin Delta Watershed (Draft)

California State Water Resources Control Board (SWRCB) | August 19th, 2026

Summary

A water quality control plan consists of: (1) beneficial uses to be protected; (2) water quality objectives for the reasonable protection of beneficial uses; and (3) a pr

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Evaluation and Synthesis of the Yolo Bypass Fish Monitoring Program

U.S. Geological Survey (USGS) | August 18th, 2026

Summary

The Yolo Bypass is the largest functional remnant floodplain of the Sacramento River, providing benefits to aquatic taxa of the San Francisco Bay and Sacram

The Yolo Bypass is the largest functional remnant floodplain of the Sacramento River, providing benefits to aquatic taxa of the San Francisco Bay and Sacramento–San Joaquin Delta (hereafter, Bay-Delta). Because of the Yolo Bypass’s vital role in flood control and its ecological effects, the California Department of Water Resources started the Yolo Bypass Fish Monitoring Program (YBFMP) to monitor the aquatic ecology of the floodplain. Here, we present a scientific evaluation of the monitoring program to assess the efficacy and efficiency of the program in meeting its objective of collecting biological data to understand the ecological role the Yolo Bypass plays in the larger Bay-Delta. We used a multivariate assessment of floodplain flow to classify flood events (no flood, intense, early, late) and water years (low, average, high). To assess efficacy, we used a null hypothesis approach to determine if the YBFMP could distinguish variability in measured constituents (water quality and nutrient concentrations; phytoplankton, zooplankton, drift invertebrates, and fish communities; and densities of Chinook salmon [Oncorhynchus tshawytscha], Sacramento splittail [Pogonichthys macrolepidotus], and prickly sculpin [Cottus asper]) across different flood regime classifications. To assess efficiency, we used a data subsampling approach to quantify the amount of data needed to reach similar conclusions to analyses that used the entire dataset. Regarding efficacy, we concluded that the YBFMP is generally effective at identifying variability across various spatial and temporal scales (including flood regimes). Regarding efficiency, we concluded that reduced sampling effort would likely result in similar conclusions, enabling program managers to identify sites or periods that do not provide data essential to meeting program objectives. Our evaluation of the YBFMP indicated where data variability might limit mechanistic inference (particularly for phytoplankton and zooplankton), thus indicating that a series of targeted studies may be a prerequisite for further analysis. This evaluation has also identified areas where existing sampling may not be providing additional informational value, allowing for reallocation of effort to address management concerns.

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A Benchmark Dataset of Agricultural Weather Stations over the Contiguous United States for Evapotranspiration Applications

Nature Portfolio (Springer Nature) | August 12th, 2026

Summary

Agricultural weather data are fundamental for the accurate estimate of evapotranspiration (ET), irrigation scheduling, and water-use accounting. In particular, reference

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Faster, bigger, more severe: Extreme wildfire spread sets the stage for forest ecosystem change in western and boreal North America

American Association for the Advancement of Science (AAAS) | August 12th, 2026

Summary

A relatively small number of rapidly spreading wildfire events burn disproportionately large areas. But beyond area burned, do fast fires produce distinct postfire ecolog

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Beyond Watershed Planning: Engaging Communities to Improve Outcomes of the Safe Clean Water Program

Los Angeles Waterkeeper (LA Waterkeeper) | August 11th, 2026

Summary

In the eight years since Los Angeles voters approved Measure W, the LA County Flood Control District has successfully launched the Safe Clean Water Program (SCWP). The pr

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Are Modern Droughts Unprecedented?

American Geophysical Union (AGU) | August 8th, 2026

Summary

Global drought variability of past centuries remains poorly understood due to sparse instrumental records and limited paleoclimate reconstructions. Yet, quantifying long-

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Snow-eater heat waves of the western United States

American Association for the Advancement of Science (AAAS) | August 5th, 2026

Summary

Abrupt snowmelt, triggered by rain-on-snow events or “snow-eater heat waves,” can cause flooding, initiate or accelerate snow drought, and affect water availability.

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Assessing the Status and Drivers of Phytoplankton Blooms along the Riverine to Freshwater-Tidal Continuum in a Modified Delta

Springer Nature | August 1st, 2026

Summary

Shifts in phytoplankton communities, from beneficial taxa that fuel food webs to harmful taxa that degrade water quality, are often linked to anthropogenic modifi

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Recent strengthening of eastern Pacific ENSO in the last millennium paleorecord

Rewilding the upper Klamath River Basin: rapid recolonization of Chinook salmon following the world’s largest dam removal

Water Quality Control Plan for the San Francisco Bay/Sacramento-San Joaquin Delta Watershed (Draft)

Evaluation and Synthesis of the Yolo Bypass Fish Monitoring Program

A Benchmark Dataset of Agricultural Weather Stations over the Contiguous United States for Evapotranspiration Applications

Faster, bigger, more severe: Extreme wildfire spread sets the stage for forest ecosystem change in western and boreal North America

Beyond Watershed Planning: Engaging Communities to Improve Outcomes of the Safe Clean Water Program

Are Modern Droughts Unprecedented?

Snow-eater heat waves of the western United States

Assessing the Status and Drivers of Phytoplankton Blooms along the Riverine to Freshwater-Tidal Continuum in a Modified Delta

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