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National Hydrography Dataset Applications Overview. Symposium on Terrain Analysis for Water Resources Applications Austin, Texas December 16, 2002. 2. 1. 3. The National Hydrography Dataset Provides:. Rich cartographic feature content for making maps

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National hydrography dataset applications overview

National Hydrography Dataset Applications Overview

Symposium on

Terrain Analysis for Water Resources Applications

Austin, Texas

December 16, 2002


The national hydrography dataset provides

2

1

3

The National Hydrography Dataset Provides:

  • Rich cartographic feature content for making maps

  • A stream addressing system for linking

    water-related information to the national

    drainage network

  • Upstream/downstream modeling along

    the drainage network

  • Infrastructure for maintenance and enhancement


Nhd modeling components
NHD Modeling Components

  • Upstream and downstream navigation

    • Reach-to-reach relationships

    • Computed attributes

  • Reach drainage areas (catchments) connect the land surface to the drainage network

  • Flow volume and velocity for dilution modeling

    ( Watershed and Stream Characteristics Track,

    9:30 – 5:00 Wednesday )



  • National hydrography dataset applications overview

    WATERS

    (Watershed Assessment, Tracking and

    Environmental ResultS)

    Total Waters

    Reach Characteristics

    Reach Address Database

    Permitted

    Dischargers

    Ask WATERS

    (Web Interface)

    303(d)

    Events

    National

    Hydrography

    Dataset

    Impaired

    Waters &

    Total

    Maximum

    Daily

    Loads

    EnviroMapper for Water

    (Web Interface)

    TMDL

    Events

    NHD Reach Addressing Tools

    305(b)

    Events

    Internet

    Nutrients

    319

    Events

    WQS

    Events

    STORET

    Events

    Water Quality

    Assessments

    Water Quality

    Monitoring

    (STORET)

    NHD Reach Addressing Tools

    Non-Point

    Source Grants

    Water Quality

    Standards

    Fish Advisories

    No-Discharge Zones

    Current

    Planned

    Drinking Water Supplies

    Recreational Beaches


    National hydrography dataset applications overview

    The Water Quality Standards Database contains information on the designated uses for water bodies, such as drinking water, swimming, and fishing. As part of a State's water quality standards, designated uses provide a regulatory goal for the water body and define the level of protection assigned to it.

    WATERS

    combines water quality information that

    describes the water bodies of the United States

    http://www.epa.gov/waters

    2

    1

    EnviroMapper for Water is an Internet tool that displays these water bodies and associated water quality information (items 2-5). It enables users, from concerned citizens to environmental scientists, to view environmental data and make informed decisions.

    3

    The Water Quality Standards Database also contains the scientific criteria to support these designated uses.

    4

    The National Assessment Database contains information on the attainment of water quality standards. Assessed waters are classified as Fully Supporting, Not Assessed or Not Supporting their designated uses.

    5

    The Total Maximum Daily Load (TMDL) Tracking System contains information on waters that are Not Supporting their designated uses. TMDLs are pollution budgets used to restore the health of these impaired waters.

    The graphic above is for illustrative purposes only. The database reports shown do not necessarily describe actual water bodies displayed on the map.

    The water bodies identified through WATERS are those found on topographic maps as represented in the EPA/USGS produced National Hydrography Dataset (http://nhd.usgs.gov).



    National hydrography dataset applications overview

    AskWATERS the

    Report for NPS Grants vs Impaired Waters

    Impaired Waters in Watershed 050400004

    NPS Grants for Watershed 050400004

    Overlap of Impaired Waters and NPS Grants


    National hydrography dataset applications overview

    For More Information the

    • Watershed and Stream Characteristics Track, 9:30 – 5:00 Wednesday

    • Web Sites

      • NHD, http://nhd.usgs.gov

        • see NHD Applications link

      • WATERS, http://www.epa.gov/waters

    • Tommy Dewald, USEPA/Office of Water

      dewald.tommy@epa.gov