Using the Utility Network Analyst with the National

Hydrography DatasetIndiana GIS Local Resolution NHD

Applications for SurveyorsISPLS State Conference

January 18, 2013

Coordination of Indiana GIS through dissemination of data and data products, education and outreach, adoption of standards, and building partnerships

Using Utility Network Analyst with NHD

• NHD geodatabase network topology allows for analyzing waterflow

• Utility Network Analyst is Tool in ESRI ArcMap ArcView (Basic) license, no extension

required• Requires NHD geodatabase

hydrography dataset, not just feature classes/vector graphics Hydro_Net_Junctions NHDFlowline

Coordination of Indiana GIS through dissemination of data and data products, education and outreach, adoption of standards, and building partnerships

Analyzing Water Flow with NHD

Tools in the Utility Network Analyst Toolbar

• Show Flow Direction

• Determine common ancestors

• Find connected flowlines

• Trace downstream or upstream

• Find path upstream or downstream

• Find upstream accumulation

Coordination of Indiana GIS through dissemination of data and data products, education and outreach, adoption of standards, and building partnerships

Using Utility Network Analyst with NHD

• Add data from the NHD geodatabase to the Map Hydrography dataset

HYDRO_NET HYDRO_NET_Junctions NHDFlowline

• Add Other data as needed (not required)

Coordination of Indiana GIS through dissemination of data and data products, education and outreach, adoption of standards, and building partnerships

Using Utility Network Analyst with NHD

Coordination of Indiana GIS through dissemination of data and data products, education and outreach, adoption of standards, and building partnerships

Using Utility Network Analyst with NHD

• Turn on the Utility Network Analyst Toolbar in ArcMap

• Set Network to HYDRO_NET

Coordination of Indiana GIS through dissemination of data and data products, education and outreach, adoption of standards, and building partnerships

Using Utility Network Analyst with NHD

• Show Flow Direction From Flow

menu, select Display Arrows

High ResolutionLocal Resolution

Coordination of Indiana GIS through dissemination of data and data products, education and outreach, adoption of standards, and building partnerships

Using Utility Network Analyst with NHD

• Trace downstream Add edge

flag Choose

task Solve

Coordination of Indiana GIS through dissemination of data and data products, education and outreach, adoption of standards, and building partnerships

Using Utility Network Analyst with NHD

• Find upstream accumulation Add

junction flag

Choose task

Solve

Coordination of Indiana GIS through dissemination of data and data products, education and outreach, adoption of standards, and building partnerships

Using Utility Network Analyst with NHD

• Determine common ancestors Add edge

flags at two or more locations

Choose task

Solve

Coordination of Indiana GIS through dissemination of data and data products, education and outreach, adoption of standards, and building partnerships

Using Utility Network Analyst with NHD

• Find connected flowlines Add edge

flag Choose

task Solve

Coordination of Indiana GIS through dissemination of data and data products, education and outreach, adoption of standards, and building partnerships

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