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Assessment of Soil Loss Using WEPP Model and Geographical Information System
WEPP GIS Soil erosion Watershed
2015/8/14
Severe soil erosion has generally been regarded as a major cause of land degradation in arid and semi arid regions. A quantitative assessment of soil loss intensity is still scanty for developing appr...
Development of a Multivariate Regression Model for Soil Nitrate Nitrogen Content Prediction
linear regression multivariate statistics nitrogen NPS soil moisture spatial analysis visualization
2015/8/11
Although soil nitrate nitrogen (N) is a nutrient source for crop, it could be a potential nonpoint pollution source to the environment when its content remains high with an inappropriate management. S...
Assessment of Soil Loss Using WEPP Model and Geographical Information System
Modeling WEPP GIS Soil erosion
2015/1/9
Severe soil erosion has generally been regarded as a major cause of land degradation in arid and semi arid regions. A quantitative assessment of soil loss intensity is still scanty for developing appr...
Groundwater Flow Model and Particle Track Analysis for Selecting Water Quality Monitoring Well Sites, and Soil Sampling Profiles
modelling pollution studies Imo River basin
2015/1/8
Researchers often use only surface drainage (imperical method) as a tradition to locate sites for installation of water quality monitoring wells, and soil sampling profile for pollution studies in urb...
Derivation of Instantaneous Unit Hydrograph for a sub-basin using Linear Geomorphological Model and Geographic Information Systems
Geographic Information System GIS
2015/1/8
Rainfall is converted into runoff and reaches the river and it becomes river flow. Geomorphological Instantaneous Unit Hydrograph (GIUH) based approach, which uses the geomorphologic parameters, is us...
Effect of land use-based surface roughness on hydrologic model output
land use-based surface roughness hydrologic model coefficient Manning parameter sensitivity watershed runoff responses
2015/1/8
The Manning’s roughness coefficient (n) is commonly used to represent surface roughness in lumped and distributed hydrologic models. Model parameter sensitivity studies identify runoff response to be ...
Development of a Multivariate Regression Model for Soil Nitrate Nitrogen Content Prediction
NPS soil moisture spatial analysis visualization
2015/1/6
Although soil nitrate nitrogen (N) is a nutrient source for crop, it could be a potential nonpoint pollution source to the environment when its content remains high with an inappropriate management. S...
Erosion Risk Assessment using an Empirical Model of Pacific South West Inter Agency Committee Method for Zargeh Watershed, Iran
MPSIAC Erosion Sediment Yield Iran
2015/1/6
Watershed degradation due to soil erosion and sedimentation is one of the major environmental problems in Iran. In addressing the issue, a study on the validity of an empirical model of Pacific South ...
A Spatially Distributed Event-Based Model to Predict Sediment Yield
Runoff sediment yield Geographic Information System
2015/1/5
A study has been conducted in three sub-watersheds to model the spatial distribution of runoff and sediment yield. The basic structure of the model includes generation of runoff using SCS curve number...
Support Soil Conservation Practices by Identifying Critical Erosion Areas within an American Watershed Using the GIS-AGNPS Model
T value water quality modeling
2015/1/5
Eroded soil from overland is one of the major nonpoint pollution sources in many watersheds. The subsequent sediment not only reduces conveyance capacity of streams and usable storage volume of reserv...
Model the effect of four artificial recharge dams on the quality of groundwater using geostatistical methods in GIS environment, Oman
artificial recharge TDS Total Dissolved Solid
2015/1/5
The geostatistical techniques of GPI, IDW and Kriging were applied in order to evaluate the use of these statistical approaches in GIS environment to examine artificial recharge dams and its effect on...
LINKAGE OF ARCVIEW GIS WITH THE RZWQM MODEL
geographic Information System quasi-distributed mathematical modeling RZWQM spatial variability field management water quality modeling model integration GIS
2015/1/4
The Root Zone Water Quality Model (RZWQM) is a one-dimensional, lumped field-scale model. It can simulate major physical, chemical, and biological processes in an agricultural crop production system. ...
Estimating sediment yield using Agricultural Non-Point Sources (AGNPS) model: The effects of slope information from different GIS softwares
Geographical Information System GIS slope information Sediment yield AGNPS model tropical catchment
2015/1/4
This study compares the effects of slope information derived from three GIS software on sediment yield as estimated using AGNPS model. The three GIS software are IDRISI for Windows, ERDAS Imagine and ...
Diffused Interface Model to Prevent Ingress of Sea Water in Multi-Layer Coastal Aquifers
Diffused Interface Model Ingress Sea Water Multi-Layer Coastal Aquifers Aquifers water seawater hydrodynamic freshwater intrusion model
2015/1/4
In many regions coastal aquifers are major source of supply of water to various sectors. However, indiscriminate pumping from these aquifers leads to seawater intrusion which is difficult to contain. ...
NPS Assessment Model: An Example of AGNPS Application for Watershed Erosion and Phosphorus Sedimentation
Watershed AGNPS model Phosphorus Sedimentation
2014/11/12
AGNPS, which is an agricultural non-point source pollution model, was used in combination with
GIS tools to assess the feasibility of water quality effluent trading for phosphorus, in Morrow Lake
su...
