Table 1. Buffer distances and maximum elevation thresholds to define floodplain spatial extent..... 23 Table 2. Estimated total sockeye salmon run size (in thousands) for the Nushagak river watershed. Figure 2. Broad scale landscape processes and patterns such as climate and topography influence conditions at reach and microhabitat scales important for freshwater life stages of Pacific salmon, ...

Although wetlands in Tanzania and Kenya have great potentials for agricultural production and a multitude of uses, many of them are not even documented on official maps. Lack of official recognition has done little in preventing there over utilization. As the wetlands continue to play remarkable roles in the movement of people and terrestrial species in the region, it is important that they are...

Engineering Risk Analysis and Multi-Objective Decision-Making Under Risk are considered as a general framework for floodplain management and protection from extreme floods. Distinction is made between (a) the catchment or large scale planning and (b) the local or small scale design of protective measures. After defining the risk of flooding at different scales and multiple criteria for selectin...

The Sentinel-1 mission provides frequent coverage of global land areas and is hence able to monitor surface water dynamics at a fine spatial resolution better than any other Synthetic Aperture Radar (SAR) mission before. However, SAR data acquired by Sentinel-1 also suffer from terrain effects when being used for mapping surface water, just as other SAR data do. Terrain indices derived from Dig...

Once cut off from the main stem of the river, oxbow lakes commonly remain connected to the active river through narrow self-formed channels which evolve at the time of lake formation. These channels, referred to here as “tie channels” (Blake and Ollier 1971), allow the regular exchange of water and sediment; flow enters the lake when river stage exceeds lake stage and drains from the lake as ri...

The determination of hydrodynamic vegetation density of floodplain forests in the Netherlands is currently based on manually delineated vegetation types and a lookup table to convert these into vegetation density. In this paper a method is presented to extract vegetation density from high-density airborne laser scanner data. Field reference data were collected on 45 plots in three different flo...

pattern of feeding and reproduction of amblypharyngodon mola (hamilton, 1822) was studied in two floodplain lakes of north 24 parganas districts of west bengal in india during 2011.  results indicated that the fish exhibited a predominantly herbivorous diet with algae as the main content of gut. a long, thin walled, coiled gut and closely packed filamentous gill racker suited this feeding habit...

Digital Elevation Models (DEMs) act as an essential input to hydraulic models for the simulation of flood hazard maps. Coarser resolution DEMs are subject higher levels uncertainty, particularly in capturing river-bed bathymetry. The principal aim present study was assess potential use freely available and 1D 2D HEC-RAS modeling approaches mapping four different types river morphology. DEM crea...

Improvements in Light Detection and Ranging (LiDAR) technology and spatial analysis of high-resolution digital elevation models (DEMs) have advanced the accuracy and diversity of applications for coastal hazards and natural resources management. This article presents a concise synthesis of LiDAR analysis for coastal flooding and management applications in low-relief coastal plains and a case st...