Creating a hydrological network for the Yukon Territory

Presentation for the 2014 FME International User Conference in

Vancouver, BC

by

The Community Mapping Network www.CMNBC.CA

Brad Mason and Rob Knight (Directors) assisted by Jackie Woodruff

Overview

!  Acknowledgements !  About the Community Mapping Network !  What is the Yukon Hydrological Network? !  How was the Network built? !  The FME experience !  The Yukon Watershed Atlas in action !  Next steps

Acknowledgements

!  Fisheries and Oceans Canada, Whitehorse (Louise Naylor)

!  NRCAN (Denis Boutin and team) !  George Eade and Jackie Woodruff !  FME (the software solution and conference

participation)

Contractors & Volunteers Jackie Woodruff George Eade

Advisory Committee

Directors ●  Brad Mason ●  Rob Knight

Software Platform ●  SQL Server 2012 ●  MapGuide Open Source ●  PHPRunner ●  GoMap (GeoMapGIS)

Community Mapping Network

cmnbc.ca

Web Applications

●  Yukon Fisheries Information Summary System

●  BC Marine Conservation Analysis

●  Okanagan Habitat Atlas ●  Great Blue Heron

Management Team Atlas ●  Shorekeepers Atlas ●  South Coast Bat Action

Team

And 60 or more...

What Is The Community Mapping Network?

www.cmnbc.ca

What is the Yukon Hydrological Network? Cmnbc.ca

The Yukon hydrology project area

About 186,000 sq. Miles 35,000 people 264,000 rivers, 215,000 lakes

http://cmnmaps.ca/fiss_yukon/

What is the Yukon hydrological network?

!  A GIS-based watershed atlas similar to the British Columbia 1:50K Watershed Atlas;

!  Fish and fish habitat management tool, watershed modeling, land use planning and regulation, and potentially climate change;

!  It connects streams to its tributaries and lakes from headwaters to the sea;

!  Uses a hierarchical watershed code system

Building On Canada's National Hydrographic Network Geospatial Data

!  The NHN is the base hydrology for the Yukon Watershed Atlas at a scale of 1:50,000;

!  The NHN uses available federal and provincial data;

!  provides a quality geometric description and a set of basic attributes describing Canada's inland surface waters (initiated in 2002);

Canada's National Hydrographic Network

!  Unique identifiers are associated with each geometric and event object (NIDs)

!  Geospatial digital data completed to the CL3 level !  GEOBASE.ca !  Network linear flows !  Validate flow direction !  Waterbody definitions (feature coding geographical

names)

Limitations of the National Hydrographic Network

!  The CL3 level of NHN data provides a basic stream network for the Atlas project;

!  Stream segments are topologically correct and connected end to end;

!  Stream direction is mostly correct; !  No attribution to allow the building of a full network; !  Stream segments do not have an identifier that

indicates which segments are part of the same stream except where stream are named

Input Data - National Hydro Network

The National Hydro Network data produced by Natural Resources Canada at Completion Level 3 was used as the stream network input to this project.

Data Cleanup

four coincident edges. Inconsistent directionality. Gaps in the network.

36 FME Transformers used

Tester CoordinateSetter AttributeExposer StreamOrderCalculator

LineJoiner Intersector TopologyBuilder ListSorter

Matcher ListSearcher ListElementCounter Counter

AttributeCreator FeatureMerger ListExploder PointConnector

CoordinateRounder GeometryRemover CoordinateExtractor Chopper

Filter Aggregator StringConcatenator 2PointReplacer

Reprojector Bufferer DuplicateRemover FeatureHolder

NetworkTopologyCalculator HullReplacer 2DPointReplacer ListHistogrammer

StatisticCalculator ParameterFetcher PointonPointOverlayer SpatialRelator

Horton Order Stream Classification

The Horton Order was calculated for each stream network defining the mainstem and tributaries using the StreamOrderCalculator transformer in FME.

Horton Order assigns the smallest number to the highest tributaries and the largest number to the mainstem of the network.

Mainstem is the named stream if it exists or the longest path to the pour point (destination) if a named stream does not exist.

Each stream was assigned a unique ID based on the connected Horton Order segments.

Only Level Priority 1 stream segments were processed.

Creating Routes and Watershed Code’s

Arc Macro Language Scripts (AML’s) were adapted from the BC 1:50,000 Watershed Atlas project to build routes and assign hierarchical watershed codes:

YUKON_BUILD_ROUTES Joins stream segments with a common ID together into continuous routes.

CREATE_NEW_YWS_CODES Creates watershed codes based on the routes and seed watershed codes.

Watershed Code Example:

800-345678-00000-00000-0000-0000-000-000-000-000-000-000

Tributary of Yukon River flows into the Yukon River 34.5678% of the way upstream

Final Data Products

ESRI File Geodatabase -Streams -Lakes

SDF data layers on MapGuide Application -Streams -Lakes

The 13 work units were merged together and Clipped to the border to create a final atlas product.

The Yukon Watershed Atlas in Use

Yukon Fisheries Information Summary System (FISS) Application www.cmnmaps.ca/FISS_Yukon

Next Steps

!  Copy watershed codes to all point data !  Assign watershed codes to secondary

routes !  Create dynamic segments for point data !  Create watershed boundaries !  Fix stream and lake names and routes !  Learn more about using FME

Brad Mason & Rob Knight masonb12@telus.net

Acknowledgement of support from Jackie Woodruff

Thank You

www.cmnbc.ca