Arc Hydro for the Watershed Management Program at

Arc Hydro for the Watershed Management Program at the Southwest Florida Water Management District Presenters: Gordon Mc. Clung, P. E. Diana Burdick Jamison Janke, E. I. Nam Nguyen, E. I.

Arc Hydro and GIS Implementation • Developed the SWFWMD’s Guidelines and Specifications for the establishment of standardized procedures for the Watershed Management Program and GIS (Arc. Info - ESRI) database for storing/maintaining data. Ø Coverage/shapefile Ø Related tables Ø Establishes data standards for data acquisition, spatial identification and storage of data.

Arc Hydro and GIS Implementation • September 2002 – March 2003: • Internal requirements analysis • March 2004: • Database design workshop • Application prioritization workshop • Critical tools overview • December 2004 • Database Design • Begin loading Database • February 2005 • Tools Delivered • Begin Testing on Small Watersheds • Spring/Summer 2005 • Migrate to Arc. GIS Version 9 • Current • Revisions to database design • Standardization of terminology • Identification of workflow

Arc Hydro Database Design • 4 feature datasets • 21 feature classes • 29 object classes • Domains/relationship classes

Arc Hydro Database Design Database design issues: • Reviewed current coverage/shapefile format for migration to GDB • “Enterprise” maintains the current environment while project information is maintained by PGDBs. Ø Index layer maintained in Enterprise that points to project PGDB location

Arc Hydro Application Development Four “critical” tools identified: • Management of Hydro. ID between PGDB and SDE • Geo. RAS import/export from PGDB/SDE to define future import/export tools • Ingest of One. Rain data • Internally drained connectivity

Arc Hydro Application Development

Arc Hydro and GIS Implementation Other activities: • Development of Arc. Map template for current projects so migration to geodatabase easier • Testing and training • Coordinating with ESRI for terrain data in geodatabase • Implementation of historical 15 minute One. Rain data from 1993

Arc Hydro and GIS Implementation

Li. DAR SWFWMD Import of Terrain deliverables into GDB format Dealing with. 5 to 1. 5 million points per Sq. Mile

Terrain Geodatabase Current Terrain = Coverage and TINS Future with Terrain Geodatabase = Geo. Database Feature Dataset and Terrain

Workflow and Initial GIS Layers Aerial NWI Roads Soils Water

Terrain – DEM or TIN 5 feet cell size raster

Subbasins & Connectivity Generated from Arc. Hydro Tools

Subbasins & Connectivity

Connectivity – A hydronode, in pink, is placed here manually identifying a hydraulic structure during Watershed Evaluation phase

Field Reconnaissance

Hydro. Points – Additional xyz information collected

Should a new TIN/DEM be generated? ? ?

Field Photo

Hydraulic Elements Hydro. Element. ID = 118 Node. ID = 7 Hydro. Element. ID = 117 Node. ID = 7 Hydro. Node Hydro. ID = 7 Culvert Node. ID = 7 Hydro. ID = 117 Hydro. Element. ID = 119 Node. ID = 7 Culvert Node. ID = 7 Hydro. ID = 119 Culvert Node. ID = 7 Hydro. ID = 118 Hydro. Element. ID = 117 Node. ID = 7 Hydro. Element. ID = 118 Node. ID = 7 Hydro. Element. ID = 119 Node. ID = 7 Hydro. Node identifies a structure. The structure is made up of multiple hydraulic elements. Hydraulic Elements are made up of multiple hydropoints.

Model Specific Reach/Junction

Questions?