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...

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...

In this paper a Monte Carlo procedure for deriving frequency distributions of extreme discharges starting from a simplified description of rainfall and surface runoff processes and using regional data is presented. The procedure is based on two modules: a stochastic rainfall generator module and a catchment response module. In the rainfall generator module the rainfall storm, i.e. the maximum r...

The use of geographic information systems (GISs) and remote sensing to facilitate the estimation of runoff from watershed and agricultural fields has gained increasing attention in recent years. This is mainly due to the fact that rainfall-runoff models include both spatial and geomorphologic variations. The US Department of Agriculture, Natural Resources Conservation Service Curve Number (USDA...

A Redberry juniper is a basal-sprouting, evergreen conifer that occurs in west and northcentral Texas, southwestern Oklahoma, southeastern New Mexico, and northeastern Mexico (Adams and Zanoni 1979). A distribution map, based on a 1948 Soil Conservation Service (SCS) survey of all juniper (cedar) species in Texas was prepared by Allred (1949) (Figure 1 a). A 1982 SCS survey mapped the distribut...

Soil Conservation Service (SCS) and overland flow models have been used for runoff modeling over major land mass of India. Remote sensing derived daily rainfall data (Climate Prediction Centre), high temporal NDVI data (SPOT VGT), DEM (GTOPO30) and soil texture maps were used as input for the runoff modeling. SCS model setup was done in GIS (Arc GIS) environment. In general the reported and mod...

The present study aims to investigate the hydrological response of small coastal watersheds storm events. Areas around Mediterranean Sea are usually characterized by streams with intermittent flows and flash floods common. Firstly, we analyze geomorphological, soil land cover characteristics watershed in order estimate their effect on surface runoff. Furthermore, rainfall an extreme event that ...

Abstract Determinate the runoff of a watershed is challenge due to complexity representing all “inlets” and “outlets” involved in rainfall–runoff model. Therefore, methodologies applied for this purpose should have good representation variables that most influence process. One models used calculate design flow (USDA Urban Hydrology Small. Technical release, no 55 (TR-55). Soil Conservation Serv...