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Accessing Freshwater Atlas (FWA) Documentation

Using the Freshwater Atlas

Document Description Download
Freshwater Atlas User Guide User Guide PDF
Overview of Assessment Watersheds This document provides the background, objectives, principles, and production methods for a new standard delineation of assessment watersheds for British Columbia PDF
Model Glossary Glossary of Watershed spacific terms PDF

Published Information

Document Description Download

Full Newsletter PDF
FWA Excerpt from Newsletter PDF
FWA overview product presented at GEOTEC 2009 geotec 09
FWA Exec Summary The quality of B.C.'s water is a barometer that reflects the environmental, economic and social wellbeing of our province. B.C.'s burgeoning population, industrial and agricultural growth, and the potential impacts of climate change are only increasing the value of our water resources. PDF

Specifications & Technical Documentation

Document Description Download
Assessment Watershed Specifications Mesoscale aquatic Assessment Watersheds were created to replace the widely used 3rd order 1:50k watershed product with a similar but improved product that is consistent with the Freshwater Atlas. PDF
Fundamental Watershed Specifications The concept of Fundamental Watershed polygons has been developed to deal with limitations imposed by the previous method of creating Freshwater Atlas watershed polygons. PDF
SDE Warehouse Model Specifications This document is intended to outline the geometry and attribute model for the Freshwater Atlas Version 1.3 data load into the SDE in a generally readable format. PDF
Bay Name Matcher Technical Documentation The Bay Name Matcher (BNM) tool allows a user to define the extents of bays and match them to toponyms. PDF
Named Stream Snaking Technical Documentation The Stream Name Matching processes matches TRIM toponyms to line segments; which resulted in a set of stream line segments being matched to a GNIS or TRIM name. PDF
Mesoscale Aquatic Assessment Watersheds Technical Documentation Mesoscale aquatic Assessment Watersheds were created to replace the widely used 3rd order 1:50k watershed product with a similar but improved product that is consistent with the Freshwater Atlas. PDF
Hierarchical Keys Technical Documentation Hierarchical keys provide the ability to process upstream/downstream queries without walking the stream network. PDF
Island Name Matcher Technical Documentation The Island Name Matcher (INM) tool allows a user to match a set of island toponyms to set of island features. PDF
Isolated Watershed Technical Documentation The isolated watershed identification process locates isolated watersheds and identifies which watershed boundary line should be 'removed' in order to merge the isolated watershed with a non-isolated watershed. PDF
Mainstemming Technical Documentation A mainstem is a connected collection of flow edges which make up a river. Thus all the segments that make up the main flow of the Fraser River will be a mainstem. PDF
Order Magnitude Technical Documentation The following sections outline the rules for computing modified Strahler Order and magnitude on the BC stream network. PDF
Point Name Matcher Technical Documentation The Point Name Matcher (PNM) tool allows a user to match a set of point toponyms to an island or coastline vertex (point). PDF
Technical Process Documentation
Watershed Boundary Process This document is intended to give an overview of the process used to generate watershed
boundaries and provide a description for each step in the process.
PDF
Water Body Toponymy Matching Process A Water Body Toponym is a collection of cartographic letters that are intended to name hydrographic features such as lakes, marshes, etc. PDF
TRIM Toponymy BCGNIS Linking Process BC GNIS is the British Columbia Geographical Names Information System, the repository of official gazetted names for the province of British Columbia. BCGNIS is stored as an Oracle relational database, with detailed information about provenance, location, and history of geographical names in the province. PDF
TRIM Obstacle Processing These obstacles underwent two major processes; Name Matching & Projection to FWA LineWork PDF
Stream Toponym Matching Process A Stream Toponym is a collection of cartographic letters that are intended to name hydrographic features such as rivers, brooks, etc. PDF
Mics. Documentation
Water Bug Design This document describes the technical design for the FWA Watershed Boundary Generator software. It serves as a processing engine which computes the watershed boundary linework for a given block (or area) of input data. PDF
Matching 20K-50K Streams The Post Processor is an addendum to the 3-phase waterbody-waterbody matching algorithm, adding a new 4th phase. PDF
Routing Documentation The routing process generates routes on all flows. Routes on primary flows are already defined by the mainstem process; they are collected and added to the secondary flow routes which are generated by the routing software. PDF
Route Building Algorithm A stream network provides the facility to process information with respect to an entire stream system, instead of to a single stream segment. PDF
Watershed Drainage ID Requirements This document specifies the requirements for preparation of the hydrographic edge dataset for input to the Watershed Boundary Generator software. PDF
Segment Elevation Technical Issues THE STREAM NETWORK FOR COMPUTING REFINED ELEVATION WILL INCLUDE.
The following sections discuss some cases which require special rules.
PDF