some macroinvertebrate indices of stream health have been identified as most useful and efficacious. management decisions can be made with greater awareness.the objectives of this study were to assess the biological water of the hazar river using macroinvertebrates.the haraz river is one of the best freshwater ecosystems in the mazandaran province located in the north of iran.to assess the macr...

BACKGROUND One of the key issues in determining the quality of water in rivers is to create a water quality control network with a suitable performance. The measured qualitative variables at stations should be representative of all the changes in water quality in water systems. Since the increase in water quality monitoring stations increases annual monitoring costs, recognition of the stations...

Floods are both complex and destructive, in most parts of the world cause injury, death, loss agricultural land, social disruption. Flood susceptibility (FS) maps used by land-use managers land owners to identify areas that at risk from flooding plan accordingly. This study uses machine learning ensembles produce objective reliable FS for Haraz watershed northern Iran. Specifically, we test abi...