Many countries have had, at some point in their history, watershed moments when the opportunity seems to arise to wipe the slate clean and make a new beginning. Such moments often arise after wars or after revolutions or some other political upheaval which lead to a regime change, and the chance to start afresh. Typically at such times, new policies are introduced which seek to bring about poli...

DWSM, the dynamic watershed simulation model, was expanded with a subsurface and a reservoir flow routing schemes. The hydrology and sediment components of the model were applied to three agricultural watersheds in Illinois, Big Ditch (100 km2), Court Creek (250 km2), and Upper Sangamon River (2,400 km2), to simulate spatially and temporally varying surface and subsurface storm water runoff, pr...

  Application of gepraphic information system and image processing in evaluation of surface runoff of a watershed in recent years has increased greatly. In the study , the runoff curve number map was prepared using geographic information system (GIS)and Landsat Sattelite Images (ETM+)for two watersheds of Mansourabad in southern Khorasan province and Navroud in Gilan province based on the facto...

Stream habitat assessments are conducted to evaluate biological potential, determine anthropogenic impacts, and guide restoration projects. Utilizing these procedures, managers must first select a representative stream reach, which is typically selected based on several criteria. To develop a consistent and unbiased procedure for choosing sampling locations, the Illinois Department of Natural R...

Understanding the best way to allocate limited resources is a constant challenge for water quality improvement efforts. The synoptic approach is a tool for geographic prioritization of these efforts. It uses a benefit-cost framework to calculate indices for functional criteria in subunits (watersheds, counties) of a region and then rank the subunits. The synoptic approach was specifically desig...

Abstract. Water draining from rock glaciers in the Uinta Mountains of Utah (USA) was analyzed and compared with samples groundwater water primary stream a representative 5000 ha drainage. Rock glacier resembles snowmelt early summer but evolves to higher values d-excess greatly elevated Ca Mg content as melt season progresses. This pattern is consistent models describing transition melting seas...

The context for watershed analysis Lands to be analyzed Prioritization of watersheds for analysis Relation of the interagency approach to other watershed analysis methods The concept of interagency watershed analysis Goals of watershed analysis Watersheds as analysis units The issue focus Time required for a watershed analysis Consistency and standardization Interagency participation Federal wa...

Nuno A. M. Araújo*, K. Julian Schrenk, Hans J. Herrmann and José S. Andrade Jr. 1 Departamento de Física, Centro de Física Teórica e Computacional, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal 2 Department of Chemistry, University of Cambridge, Cambridge, UK 3 Departamento de Física, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil 4 Computational Physics, Institute fo...