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The Single Line Hydrography Network (SLNET) contains all captured single line representations of hydrographic features. In addition, single line representations of polygonal features and single line arbitrary network connectors are in the file.

The Base Hydrography Point Update layer contains hydrographic point features representing the locations of water or water related features, it is an updated of the Base Features Hydro Points in Southern Alberta from orthophoto and various sources of provincial base data.

Base Waterbody Polygon Update is the Alberta Environment and Parks base hydrography polygon dataset, it is an updated of the Base Features Hydro Polygons in Southern Alberta from orthophoto and various sources of provincial base data.

Stream flow data are available for a number of streams across the province. New Stream flow data is available from June through September. Those who hold a Water Withdrawal for Irrigation Purposes Permit can use this tool to confirm the water flow in Island streams, and to determine whether they may legally draw water for irrigation purposes.

The hydrological regime of a stream plays a critical role in determining the biodiversity and ecological processes of aquatic, wetland and riparian ecosystems. As a result, hydrological characteristics provide important information on the integrity of freshwater systems and how they may be changing over time. The monitoring program assess and detect changes in a Streamflow Index of key hydrological measures in major transboundary watersheds at Kejimkujik. Stream water level is recorded hourly using in-situ water level data loggers.

Base Hydrography Update Index depicts the extent of the current HUC 8 (Hydrologic Unit Code) watersheds completed in 2018-2021.

Stream routes. Each stream channel is represented by a single line. Derived from the Stream Centreline Network Spatial layer and based on the 1:50,000 scale Canadian National Topographic Series of Maps.

This dataset is produced for the Government of Alberta and is available to the general public. Please consult the Distribution Information of this metadata for the appropriate contact to acquire this dataset. The Base Watersheds data was created by re-working and post-processing the digital elevation data from the Alberta Provincial Digital Elevation Model, the digital hydrography data from the Base Stream and Flow Representation Lines, the Base Waterbody Polygons and the Base Hydrography Point Events and the digital boundaries of the ATS Version 4.1 Alberta Provincial Boundary. The digital elevation data was hydrologically corrected using simplified versions of the Base Stream and Flow Representation Lines and the Base Waterbody Polygons.

Audit report

The Alberta ArcHydro Phase 2 Data was developed to support the delineation of catchment areas in the province of Alberta. It was generated using a DEM which had the Base Stream and Flow Representation (Single Line Hydrography Network) burned (excavated) into it. The data is divided into eighteen major basins across Alberta using an ArcHydro ID to relate the datasets.