What's New with NHDPlus (Classic)?

Transcription

1 What's New with NHDPlus (Classic)? 1987 Reach File Version NHDPlus Annie Mejaes EPA, Office of Water

2 2 Overview NHD-NHDPlus Basics Evolving NHD-NHDPlus Data and Tools Training and Support

3 The National Hydrography Dataset is the Foundation 3 Surface Water Features for the entire nation Lakes, rivers, reservoirs, stream gages, etc. Spatial Database

4 NHD - Complete Network with Flow Direction 4 Image credit: Jeff Simley

5 National Hydrography Dataset Plus (NHDPlus) An integrated suite of geospatial products including flow volume and velocity estimates to support modeling Incorporates - Hydrography (streams) Watershed Boundaries Elevation

6 NHDPlus Core Data Components Snapshots of primary ingredient datasets National Hydrography Dataset National Elevation Dataset Watershed Boundary Dataset Additional stream attributes flow volume and velocity linked USGS gaged flow data stream order and stream level hydrologic sequence number and many others Catchments and attributes Flow direction and accumulation grids 6

7 The Evolving NHD and NHDPlus Framework The blue boxes identify the framework versions used to estimate stream flow volume and velocity. EPA/USGS-W Reach File Version 1 (RF1) (1:500,000) 1982 Data Stewardship Responsibilities: USGS - High Resolution NHD and NHDPlus EPA - Medium Resolution NHD and NHDPlus EPA/USGS-W/USGS-G Medium Res NHD (1:100,000) 2000 EPA/USGS-W Medium Res NHDPlus (1:100,000) 2006, 2012 USGS-G High Res NHD (1:24,000 or better) 2007 USGS-G High Res NHDPlus (1:24,000 or better with generalization) 2017 What s the Difference between Versions? Framework Facts Map Total Stream Catchment Average Map Scale Accuracy Miles (mi) # of Lakes Area (sq mi) Reach File Version 1 (RF1) 1:500K +/- 254m 600,000 4, Medium Resolution NHDPlus 1:100k +/- 50m 3,200,000 38, High Resolution NHDPlus 1:24K or better +/- 12m 7,500, ,

8 Medium Resolution Stewardship Reporting Updates to NHD in NHDPlus MR Users identify and report errors/improvements that can then be applied to NHD by EPA data editors. When reporting errors, users provide: a geographic reference for the features that need to be corrected, a description of the error, and an image of how any new geometry should look. The NHD edits are integrated into NHDPlus during the next refresh - subject to program priorities and funding.

9 MR A Sampling of How NHDPlus is Being Used EPA reporting on water quality (WQ Framework!) EPA National Aquatic Resource Surveys USGS SPARROW water quality modeling DTRA ICWater spill response NOAA National Water Model (flood forecasting) OWDI Hydro Network Linked Data Index Idaho lake monitoring plan South Carolina stream assessment conservation planning tool (For more examples, see the Applications Catalog on the NHDPlus web site)

10 Clean Water Act Section 303(d) Performance Measures (draft) MR 10

11 New NHDPlus data! MR First national time-of-travel estimates that consider latency in lakes NHDPlus for priority waters in Alaska under production National seamless flattened File GeoDatabase for simplified data management and direct access to feature attributes StreamCat catchment attributes

12 NHDPlus Technologies and Users MR/ HR Some Experts (terminal monitor) (custom code) (ArcMapp, QGIS) Many Knowledgeable Users Huge Number of Casual Users (AGOL, MyWATERS Mapper, MyWATERS KMZ)

13 Latest web map going viral?

14 EPA Office of Water Geospatial Architecture Watershed Assessment Tracking and Environmental ResultS (WATERS) Programmatic Data/Databases Discharge Permits Water Quality Monitoring Water Impairments Drinking Water Intakes And others Reach Address Database (RAD) Stream Addresses NHDPlus Web Services Mapping Layers Name Search Up/Downstream Search Watershed Delineation Watershed Report Many others Applications Source Water Areas NARS Watersheds ATTAINS NPS GRTS Ask Waters How s My Waterway? MyWATERS Mapper MyWATERS Google KMZ Watershed Plan Builder NPDAT DARTER (with COE) Drinking Water Mapping Application Construction General Permit DMR Pollutant Tool OECA ECHO KCWaters.org

15 Potential technology path for RAD/WATERS infrastructure

16 In Progress Finalization and publication of WATERS GeoProcessing services Core Program Attribute exposure NHDPlus and WATERS mapping services WATERS Analytical web services NHDPlus in WATERS refresh which will re-enable Time of Travel capabilities and will include the Pacific Territories Watershed Characterization Report being updated to include StreamCAT and other water related information

17 NHDPlus Late 2016 Releases Documentation - new NHDPlusV2 User Guide, metadata, training exercises, technical papers, more presentations Data - component updates Tools - NHDPlusV2.1 Flow Table Navigator, NHDPlusV2.1 Toolbox

18 NHDPlus Core Tools and Services Desktop tools (ESRI ArcGIS) Data prep and check-update utilities for your local NHDPlus holdings Network navigation Watershed delineation Catchment attribute allocation and accumulation (CA3T) Web services (ESRI and Open Source) Mapping and analytical services including - Network navigation with linked data search Watershed delineation Watershed report And others Accessible by desktop clients (ESRI ArcGIS, Google Earth ) and Web viewers (ESRI ArcGIS Online ) MR

19 New NHDPlus tools! Network distance script (desktop) Number of permitted dischargers xx miles upstream of an impaired water Watershed report Incorporates StreamCat catchment attributes Analytical services as ESRI GP services Upstream/downstream search Watershed delineation HydroLink web indexing tool MR

20 NHD Web Tools - Hydrolink Tool 20 Technical Contacts: Daniel Wieferich - dwieferich@usgs.gov Andrea Ostroff - aostroff@usgs.gov MR HR Slide credit: Daniel Wieferich and Andrea Ostroff

21 Enhanced Watershed Report Service 21 Soon-to-be-released Watershed Report service that includes access to filtered StreamCat landscape metric.

22 Upstream navigation GP service under AGOL MR

23 Hydro Network Linked Data Index (NLDI) navigate/ut/nwissite navigate/ut/wqp MR (Slide: Dave Blodgett)

24 Web Service Performance We re still feeling the need for more speed! Cloud scalable performance Database tuning Dynamic cache Pre-computing national cache MR HR

25 25 Access to NHDPlus Resources NHDPlus Resources on the NHDPlus Web site: Just Google epa water data tools (hosted by EPA) Note new training materials including slides, videos and exercises Technical support and application consultation MR Introduction: Resources

26 26 Any questions? Annie Mejaes Tommy Dewald