The increase in wildfires across much of Western United States has a significant impact on the water quantity, quality, and sediment large woody debris transport (LWD) within watershed reservoirs. There is need to understand volume fate LWD transported by post-wildfire flows Lake Oroville Reservoir, north Sacramento, California. Here, we combine flow modeling, hydrologic hydraulic modeling asse...

The urban stream syndrome may not be limited to streams in urbanized watersheds. We measured the spatial pattern of impervious cover in ∼82,800 small watersheds across the conterminous United States by comparing watershed-based and stream-based measures of imperviousness. The watershed-based measure was the commonly used watershed percentage impervious cover. The stream-based measure was the pe...

We study hierachical segmentation in the framework of edgeweighted graphs. We define ultrametric watersheds as topological watersheds null on the minima. We prove that there exists a bijection between the set of ultrametric watersheds and the set of hierarchical edgesegmentations. We end this paper by showing how the proposed framework allows to see constrained connectivity as a classical water...

This data note describes the Biscuit Brook and Neversink Reservoir watershed long-term monitoring that includes: 1) stream discharge, (1983–2020 for 1937–2020 watershed), 2) water chemistry, 1983–2020, at 4 stations, 3) fish survey from 16 locations in 1990–2019, 4) soil chemistry 2 headwater sub-watersheds, 1993–2012 5) periodic sampling 364 throughout watershed, 1983–2020. The Catskill Mounta...

The land use and occupation in watersheds directly influences the water resources, vegetation cover is a crucial factor for maintenance. objective of this study was to characterize nine Lower Iguaçu River (Andrada, Monteiro, Gonçalves Dias, Floriano, Silva Jardim, Cotejipe, Sarandi, Capanema Santo Antônio sub-basin rivers), using classification from satellite images. area obtained high accuracy...

The American pika (Ochotona princeps) is considered a sentinel species for detecting ecological effects of climate change. Pikas are declining within a large portion of their range, and ongoing research suggests loss of sub-surface ice as a mechanism. However, no studies have demonstrated physiological responses of pikas to sub-surface ice features. Here we present the first analysis of physiol...

forest cover is one of the most effective factors in reducing flooding in northern iran, so that in recent years the destruction, land use changing and uncontrolled harvesting of forest areas, has greatly increased the number and magnitude of floods. so far, there have been few studies on forest hydrology in iran, particularly the northern hyrcanian forests. this study examines the impact of a ...

sub basin prioritization is one of the integrated watershed management and sustainable development strategies. to protect natural resources, through marking zones of potential damage in small areas for is a primary need sustainable development. degradation potential zones project for watershed protection measures is not cost-effective economically. so this is a prerequisite for sub basin priori...

Reproductive-based migration is a challenging period for many animals, but particularly for Pacific salmonids, which must navigate from the high seas to freshwater natal streams. For the first time, we attempt to answer the question as to why some migratory adult Pacific salmon die en route to spawning grounds. Summer-run sockeye salmon (Oncorhynchus nerka) were used as a model, and the migrati...

High rates of acidic deposition in the Adirondack region of New York have accelerated acidification of soils and surface waters. Annual input-output budgets for major solutes and acid-neutralizing capacity (ANC) were estimated for 43 drainage lake-watersheds in the Adirondacks from 1998 to 2000. Sulfate was the predominant anion on an equivalent basis in both precipitation and drainage export. ...