A spatio-temporal linear dynamic model has been developed for patching short gaps in daily river runoff series. The model was cast in a state-space form in which the state variable was estimated using the Kalman smoother (RTS smoother). The EM algorithm was used to concurrently estimate both parameter and missing runoff values. Application of the model to daily runoff series in the Volta Basin ...

The study site is located in an environmentally protected area known as an "APA" in São Pedro and Analândia, State of São Paulo, southeastern Brazil, whose watercourses are under strong anthropogenic pressure. Two basins were studied (sub-basin of the Corumbataí River and basin of the Jacaré-pepira River) with the purpose of characterizing the ichthyofauna of various streams, comparing fish div...

watershed is regarded as a very complex system of natural, social, economic and ecological dimensions and like any similar systems, exploitation of its resources requires a comprehensive and coordinated planning and management. given the importance of watershed management projects for the development and management of natural resources, the enhancement of the efficiency of these activities is e...

In the present study, basin morphometry of Hirehalla Sub-basin Bagalkote District, Karnataka was carried out using remote sensing and geoinformatics techniques. Delineation calculation various morphometric parameters sub-basin done in GIS environment. The study categorized into– Linear, Aerial Relief aspects. Result obtained from analysis confirms highest order fifth showing sub-dendritic to de...

Groundwater in Kabul basin, Afghanistan was assessed for its physical, chemical and bacterial components. Kabul basin is divided in to five hydro-geologic sub-basins, water from 50 wells whose depths varies from 9 meters -71 meters was analyzed. The pH, conductivity, total dissolved solids, temperature, chemical elements (cations and anion) and bacteriological content of the groundwater conform...

Implementation of the Water Framework Directive calls for methodologies and tools to quantify nutrient losses from diffuse sources at a river basin district scale. Here, we examine the possibility of using a statistical model for source apportionment and retention of nutrients in a large transboundary drainage basin (44,000 km2). The model approach uses non-linear regression for simultaneous es...

Abstract In this study, a method for estimating the exponent “ n ” values of catchment-area equations four sub-basins within poorly gauged Benin-Owena River Basin Development Authority (BORBDA) in Nigeria is presented to enable estimation flows at ungauged sites basin and determination small hydropower (SHP) potential different locations each sub-basin entire basin. Optimal prediction streamflo...

Social-ecological fit demands that governance systems align with and function at the appropriate scales of social ecological processes being governed. While multilevel social-ecological network analysis has been applied to assess in various contexts, it not yet understand transboundary flood planning. We investigate collaborative planning efforts St. John River Basin, located New Brunswick Queb...