Catching Up on NHDPlus Version 2 (National Hydrography Dataset Plus) EPA Office of Water May 12, 2014 AWRA Specialty Conference on GIS and Water Resources.

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Presentation transcript:

Catching Up on NHDPlus Version 2 (National Hydrography Dataset Plus) EPA Office of Water May 12, 2014 AWRA Specialty Conference on GIS and Water Resources VIII

Acknowledgements 2  NHDPlus Team  Tommy Dewald / EPA Office of Water  Cindy McKay / Horizon Systems Corporation  Tim Bondelid / Consultant  Craig Johnston, Rich Moore, Al Rea / USGS Water  (Greg Schwarz, Kernell Ries, Dave Wolock / USGS Water)  (Karen Hanson / USGS WBD Technical Lead)

 NHDPlus Concepts  Introducing NHDPlus Version 2  Applications Sampler Overview 3

Why NHDPlus? 4 “What I think NHDPlus offers that is unique is in the full characterization of the flow network, identification of unregulated and regulated gages and reaches, and network-based interpolation and adjustment of flows.” - Al Rea, USGS

 Developed by EPA and USGS-Water (2006) to provide flow volume and velocity estimates for pollution dilution modeling  Builds upon NHD stream network – integrated with elevation and HUC12s  Additional stream attributes (stream order, flow, etc)  Catchments and attributes (precipitation, temperature, land cover)  Success of initial version led to Version 2 production by EPA and USGS-Water (2012) National Hydrography Dataset Plus (NHDPlus) 5

NHDPlus Concepts: Integration of NHD, WBD, and NED National Hydrography Dataset (NHD) Watershed Boundary Dataset (WBD) National Elevation Dataset (NED)

Elevation (30m) Hydrologic Units (HUC12) Stream Network NHDPlus provides the Surface Water Geospatial Framework Stream NetworkMap ScaleMap Accuracy Total Stream Miles (mi) # of Stream Segments Stream Segment Average Length (mi)# of Lakes Catchment Average Area (sq mi) Reach File Version 1 (RF1)1:500K+/- 254m600,00060,000104,10050 Medium Resolution NHD1:100k+/- 50m3,200,0002,600, , High Resolution NHD1:24K or better+/- 12m7,500,00020,000, ,000do not exist NHDPlus catchments tie the landscape to the stream network forming a ‘surface water geofabric’ (These figures are approximations (+/- 10%) provided for purposes of comparison.) 7

NHDPlus Version 2 Significant Version 2 improvements: Over 5,000 isolated networks connected Over 60% enhanced elevations nationally Now-completed national HUC12s More robust flow estimation method Runoff (USGS water balance model) Excess evapotranspiration Reference gage regression Flow additions and removals Adjustment using gaged flows “By Endurance We Conquer” (Sir Ernest Shackleton) 8

Notable Quotes - NHDPlus Production “We can’t afford to be perfect.” (P.Wiese, 6/8/00) 93. “Trust me, I’m an experienced burner.” (D.Maidment, 12/13/00) 131. “... everything that you can imagine happening, does happen.” (T.Bondelid, 7/5/05) 191. “No worries since we have unlimited minutes on nights and weekends!” (C.Johnston, 7/1/10) 198. “Are we allowed to sleep or what?” (A.Rea, 10/7/10)

10 NHDPlus Release Announcement (March, 2014)  Documentation - new NHDPlusV2 User Guide, metadata, training exercises, technical papers, more presentations  Data - component updates, monthly mean flow estimates  Tools - NHDPlusV2.1 Flow Table Navigator, NHDPlusV2.1 Toolbox (includes a tool that will compare your local data holdings with the versions available on the web site)

USGS NAWQA Cycle 2 SPARROW Nutrient Models (released August, 2011) Next generation of NAWQA regional SPARROW models is using NHDPlus Version 2 stream network and catchments Online Decision Support System Water managers, researchers and the general public can access SPARROW models and map predictions of long- term average water-quality conditions, track transport to downstream receiving waters, and evaluate management source reduction scenarios. (cida.usgs.gov/sparrow) Regional SPARROW Models RF1 NHDPlusV1 11

EPA Office of Water Geospatial Architecture Watershed Assessment Tracking and Environmental ResultS (WATERS) ( NHDPlus Stream Addresses Programmatic Data/Databases Discharge Permits Water Quality Monitoring Water Impairments Drinking Water Intakes Many others Web Services Mapping Layers Name Search Up/Downstream Search Watershed Delineation Watershed Report Many others Reach Address Database (RAD) 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 Many others 12

The inset map shows the watershed (white boundary) defining the drainage area upstream from the mouth of Four Mile Run (red dot) and a report of associated watershed characteristics – both produced using NHDPlus. NHDPlus 13

EPA National Aquatic Resource Surveys NHDPlus serves as the basis for establishing the NRSA and NLA survey sample frames – from which a representative set of sample sites are randomly selected. NHDPlus is also used to support data analysis, such as delineating drainage areas and associated attributes for sampled sites. ( 14 Drainage Area = km 2 NLCD 2001 Land Cover : - Residential = 7.86 km 2 - Forest = km 2 - Agriculture = km 2 - Wetlands = 7.32 km 2

15 (Draft) Using the Catchments to Track Progress (d)/305(b) Integrated Report (d)/305(b) Integrated Report Category Watershed Area Supporting122 sq. km Impaired131 sq. km With TMDL or Alt. Plan 64 sq. km Not Assessed343 sq. km Total Size596 sq. km Category Watershed Area Supporting149 sq. km Improved 27 sq. km Partially Improved 15 sq. km Impaired67 sq. km With TMDL or Alt. Plan 37 sq. km Not Assessed343 sq. km Total Size596 sq. km

West Virginia Chemical Spill  Spill of thousands of gallons of coal-washing chemical MCHM—4-methylcyclohexane methanol into the Elk River, WV  Spill one mile upstream from water treatment plant  Incident Command Tool for Drinking Water Protection (ICWater) used to warn downstream water suppliers  Uses NHDPlus flows and velocities  Adjusts with real-time gage data  Provided accurate travel-time estimates  Protected Cincinnati water supply and others

Model velocity Measured velocity Spill site Intake

Building State Capacity to Identify Healthy Watersheds Owen McDonough, EPA ORISE Fellow 30 April

Healthy Watersheds Landscape Condition Habitat Condition Hydrologic Condition Geomorphic Condition Water Quality Biological Condition

20 DRAFT - For many shallow groundwater systems, groundwater flowpaths closely follow the downward directions expressed by the land-surface topography

21 WIRED and Popular Science Magazines (June, 2013) Courtesy: Nelson Minar Treehugger.com (January, 2014) – A recent report by the U.S. Environmental Protection Agency concluded that 55 percent of U.S. rivers and streams are in poor condition 1. Most of us don't go to that many different rivers in our lives, so when we see a number like that we might not realize just how many rivers and streams there are in the United States. Well, the map above gives you an idea of how many there are. All river data comes from the NHDPlus dataset, a geo-spatial, hydrologic framework dataset envisioned by the USEPA. 1 Draft National Rivers and Streams Assessment (March, 2013)

NHDPlus-related Sessions  Monday  Session 1C – Water and Energy Decisions-1  Monday and Tuesday –  Poster presentation - “NHDPlus Attributes for Stream-Water-Quality Modeling”  Tuesday  Session 4A - Panel: The Integration of Elevation and Hydrography Data  Wednesday  Session 8B and 9B – NHD (and NHDPlus) Workshop: Parts 1 and 2  Conference Luncheon - Panel: 3DNHD – The Plan For The Future  Session 10C - Integrated Watershed Management-2

Tommy Dewald EPA Office of Water Questions? (On the Web - Google ‘nhdplus’) ‘All the water that will ever be is, right now.’ -National Geographic Magazine, October 1993 ‘We forget that the water cycle and the life cycle are one.’ - Jacques Cousteau