Listserv: A SWMM users' listserv was established by the University of Guelph. This listserv allows subscribers to ask questions and exchange information.
Native support for 50+ GIS/CAD layer formats Create, open, edit and export the most popular GIS vector, raster and grid formats. Import, copy and paste entities between layers.
Render and query any layer based on inputs, results or user-defined parameters. Supports virtually all projection/coordinate systems Create accurate models anywhere in the world with over 4,500 predefined coordinate systems, on the fly reprojecting, layer rectification and coordinate system conversion tools. Full suite of topological tools Benefit from GIS tools optimized for your water management modeling needs including area-weighting, buffering, clipping, Theissen-polygon generation, auto-connectivity, spatial auditing and many more.
Terrain grid (DEM) support Estimate surface slopes, extract DEM elevations, delineate watersheds, sample transects, edit features, burn streams, and even create your own digital elevation models. Automated watershed delineation Use high-resolution DEMs to quickly discretize and parameterize models; create detailed catchment networks with hydraulic routing incorporated. Bing Maps, OpenStreetMaps and WMS map services Instantly georeference your model with free background tile map services from Microsoft and OSM and support for Web Map Services. Graph and analyze millions of datapoints efficiently Comprehensive support for virtually any time series, optimized for the efficient loading, visualizing and analysis of very large data sets. Store and manage time series in a wide variety of database and file formats Manage time series in the format of your choice, including binary and ASCII formats, SQL, MDB, Excel, NEXRAD, Environment Canada Radar, GRIB2, OSIsoft PI, NUMERICA, NWS and many more formats natively supported. Full editing capabilities for correcting, converting or deriving time series Edit, interpolate, copy, crop, extract, convert any time series, and much more.
Derive time series using user-defined expressions and disaggregate rainfall to create high resolution long-term time series. Automated auditing tools to flag suspect and incorrect data Audit observed data with sensor performance, range, variation speed, redundancy and missing data checks. Visually flag and report suspect and incorrect data for correction and avoidance during calibration/validation event selection. Calculate objective function statistics and error functions Calculate the max., min., mean, and total, as well as the volume, duration and number of exceedances and deficits on any time series. Assess errors using any of eight common error metrics. Event analysis: statistics and return periods Automate event identification and event statistical analysis, including frequency and return period calculations, annual and seasonal analysis and more. Scatter, calibration, duration-exceedance and hydro-modification plots Compare multiple time series with trend lines, plot duration exceedance curves on any type of time series, and complete hydro-modification analysis with pass-fail analysis.
The north banks of the lake are high and rocky, with clear-cut traces of ancient terraces. The south banks are low and sandy, and wide belts of them are covered with thickets of reeds and numerous small lakes. Only such small rivers as the Qaratal, Aqsū, Ayaguz, and Lepsi feed the eastern part of the lake. Ozero balhash prezentaciya. With almost equal areas in both parts of the lake, this situation creates a continuous flow of water from the western to the eastern section. The water of the western part was almost fresh and suitable for industrial use and, but that of the eastern part has long been salty.