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NHD Activities in Florida

Learn about the National Hydrography Dataset (NHD) applications in water resource management in Florida, including mapping, modeling water flow, and maintaining data. Understand how the NHD is used in programs like the Total Maximum Daily Load (TMDL) to protect water quality.

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NHD Activities in Florida

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  1. Joe NorthEnvironmental ManagerGeographic Information SystemsWatershed Data Services SectionFlorida Department of Environmental Protection2600 Blair Stone Road, Mail Station 3525Tallahassee, Florida 32399-2400http://www.dep.state.fl.us/waterphone: (850)245-8537fax: (850)245-7571 NHD Activities in Florida

  2. FLORIDA DEPARTMENT OF ENVIRONMENTAL PROTECTION • Regulatory Programs • Water Resource Management • Wastewater (Operator certificcation, Water reuse, Industrial, wastewater residuals • Stormwater (NPDES, Nonpoint source) • Drinking Water (operator certification, public water systems) • Wetlands (Env. Resource Permitting, Mitigation) • Environmental Assessment and Restoration • Total Maximum Daily Loads • Assessment and Restoration • Probabilistic Water Quality Monitoring • Springs Initiative • Groundwater (Delineation, Monitoring, Source Water Assessment, Underground Injection) • Everglades (CERP, Everglades Forever, Permitting) • Beaches (Coastal Construction, Erosion control, Coastal permitting) • Land and Recreation • Planning and Management

  3. FLORIDA’S WATER MANAGEMENT DISTRICT’S • Water Supply • Water Quality Management • Flood Protection • Natural System Management • Produce a District Water Management plan that communicates, “Maximum reasonable beneficial use of water resources considering economic development, environmental protection, drainage, flood control and water storage”

  4. Water Management Agencies (cont.) • Division of Emergency Management • Damage Assessment and Prediction Models • Co-develop with LIDAR (FEMA map modernization) • County and Municipal Governments • Water Supply • Water Protection – Stormwater management

  5. Status of the Memorandum of Understanding • Executed in February 2008 • Complete photo revision of subbasins (4th level HUA, 8-digit HUCS, proposed management of 6th level drainage basins) • Revision of surface water features based on local feedback • Involvement in NHD, WBD, and GNIS • Updating NHD data directly to USGS

  6. USGS Representatives • Point of Contact • George HeleineUSGS, National Geospatial Technical Operations CenterNHD POC1400 Independence Rd., Rolla, MO 65401E-mail: gheleine@usgs.govPhone: (573) 308-3583 • Geospatial Liason • Louis J. Driber - Physical ScientistGeospatial Liaison to Florida, Puerto Rico, US-VINational Geospatial Program OfficeU.S. Geological Survey2639 North Monroe Street Suite A-200Tallahassee, Florida 32303 Office: (850) 553-3645Cell: (850) 345-9410email:  ldriber@usgs.gov

  7. NHD Applications • Making maps. Positional and descriptive data in the NHD provide the starting point for making many different kinds of maps. • • Geocoding observations. Much like street addresses provide a way to link data to a road network,the NHD's "reach code" provides the means to link data to water features. • • Modeling the flow of water along the Nation's waterways. Information about the direction offlow, when combined with other data, can help users model the transport of materials inhydrographic networks, and other applications. • • Maintaining data. Many organizations would like to share the costs of improving and updating their collections of geographic data. Unique identifiers and other methods encoded in the NHDhelp to solve technical problems of cooperative data maintenance. Source : NHD_ConceptsAndContents.pdf http://nhd.usgs.gov/techref.html

  8. Division of Environmental Assessment and Restoration’s uses of the NHD • Making Maps – FDEP maintains the High and Medium Resolution NHD on an Oracle Based Spatial Data Base Engine (SDE) Library – Graphic Depiction and Labeling are scale dependant

  9. Division of Environmental Assessment and Restoration’s uses of the NHD • Total Maximum Daily Load Program • A scientific determination of the maximum amount of a given pollutant that a surface water can absorb and still meet the water quality standards that protect human health and aquatic life. Water bodies that do not meet water quality standards are identified as "impaired" for the particular pollutants of concern--nutrients, bacteria, mercury, etc.--and TMDLs must be developed, adopted and implemented for those pollutants to reduce pollutants and clean up the water body. • The threshold limits on pollutants in surface waters--Florida's surface water quality standards on which TMDLs are based--are set forth primarily in rule 62-302, Florida Administrative Code, and the associated table of water quality criteria.

  10. Division of Environmental Assessment and Restoration’s uses of the NHD What are the basic steps in the TMDL program? How does it work? • Assess the quality of surface waters--are they meeting water quality standards? • Determine which waters are impaired--that is, which ones are not meeting water quality standards for a particular pollutant or pollutants. • Establish and adopt, by rule, a TMDL for each impaired water for the pollutants of concern--the ones causing the water quality problems. • Develop, with extensive local stakeholder input, a Basin Management Action Plan (BMAP) that.... • Implement the strategies and actions in the BMAP. • Measure the effectiveness of the BMAP, both continuously at the local level and through a formal re-evaluation every five years. • Adapt--change the plan and change the actions if things aren't working. • Reassess the quality of surface waters continuously

  11. What are the basic steps in the TMDL program? How does it work? • Assess the quality of surface waters--are they meeting water quality standards? • STORET stations (USEPA STOrage and RETrieval) WQ Data • Impaired Waters Rule Analysis • Leads us to… • Determine which waters are impaired--that is, which ones are not meeting water quality standards for a particular pollutant or pollutants. • Generates a series of lists that are organized by assessment units we report to USEPA and that drive schedules to determine when we… • Establish and adopt, by rule, a TMDL for each impaired water for the pollutants of concern--the ones causing the water quality problems. • The results of which are published and in addition to being fed to the regulating community for future permits…allow us to… • Develop, with extensive local stakeholder input, a Basin Management Action Plan (BMAP) that in turn allow us to • Implement the strategies and actions in the BMAP

  12. Division of Environmental Assessment and Restoration’s uses of the NHD Making Maps, Geocoding, Managing Data • Inventory of Total Maximum Daily Load Program “Assessment Units” (NHD-WBID’s) • Bureau of Watershed Restoration reports “Impairment” to USEPA by Reach Code and measure

  13. Currently 6394 WBID polygons

  14. WBID Polygons in the Ochlockonee Basin Area

  15. Full NHD Flowlines for Same Area 831,153 Flowline Segments (Reaches) in Full Statewide NHD

  16. Subset of Full NHD Used to Represent The WBIDs using 1:24K NHD Geometry BASED on useable Sampling Information 23,381 Flowline Segments In WBID NHD subset Less than 3% of total NHD

  17. NHD WBIDs statewide

  18. TMDL Assessment Units (WBID’s) near the Seminole – Orange County Boundary

  19. TMDL Assessment Units (NHD subset) near the Seminole – Orange County Boundary Lake Monroe Lake Harney Lake Jesup Lake Apopka

  20. Division of Environmental Assessment and Restoration’s uses of the NHD • Inventory of Total Maximum Daily Load Program “Assessment Units” (NHD-WBID’s) • Bureau of Watershed Restoration reports “Impairment” to USEPA by Reach Code and measure • Improve the siting of STORET stations used in the Impaired Waters Rule Analysis

  21. TMDL Assessment Units (NHD subset) near the Seminole – Orange County Boundary Lake Monroe Lake Harney Lake Jesup Lake Apopka

  22. WBID polygons a great way to estimate landuse nutrient loading Polygons are not very good for identifying where stations belong Do these stations fall on Howell Creek?

  23. NHD provides a great way to assigning stations to proper WBIDs Yes, these stations fall on Howell Creek

  24. NHD provides a great way to assigning stations to proper WBIDs Is this station on Howell Creek

  25. NHD provides a great way to assigning stations to proper WBIDs Yes, this station is on Howell Creek, but it has a 300 foot lat/long error

  26. NHD provides a great way to assigning stations to proper WBIDs Where does this station belong?

  27. NHD provides a great way to assigning stations to proper WBIDs this station falls on a piece of NHD lake

  28. Florida’s uses of the NHD • Geospatial Analysis (proximity, connectedness, inclusion, exclusion) • Framework for Modeling Purposes (SFWMD’s AHEAD, SJRWMD ArcHydro Geodatabase) • Integrated Water Resource Monitoring Network (Large and small stream and Lake resource monitoring)

  29. TMDL needs • 1. Given a point on a linear hydro network, the ability to calculate upstream and downstream distances • 2. Given a point on a linear hydro network, the ability to calculate upstream contributing watershed areas and downstream receiving areas. • 3. Ability to index an existing point (point source discharges, sampling stations, gaging stations etc. ) to a reach or other water feature • 4. Given a point on a linear hydro network, the ability to select all features (and attributes) indexed to reaches belonging to an upstream or downstream network that that point “belongs-to” • 5. Ability to calculate flow and velocity for selected reaches • 6. Ability to depict and understand land surface elevations and stream crosssection information in relation to NHD reaches • 7. Ability to calculate lake volumes (considering surface area, lake bottom “bathymetery”) • 8. Delineate a watershed area down to the individual reach-catchment level based on a DEM or other data • 9. Map the location of and facilitate the understanding of the impact that internally drained basins have on hydrology • 10. Map the location of and facilitate the understanding of the impact of man-made stormwater systems to local, intermediate and wide-scale hydrology. Network Utility Analyst Trace Network Tasks ArcHydro Point Event ArcHydro ArcHydro ArcHydro ArcHydro NHD WBD NHD and ArcHydro NHD local resolution data

  30. NHD Challenges • Perennial versus Intermittent Streams • Addressed in this meeting • Complexity of the Dataset • Stewardship – Educating personnel and symbology improvements (local copies) • Lack of Editing Step by Step • Improve the documentation (excepting capture conditions) • Communication – Room for Improvement • Weekly updates to Point of Contact • Budgetary Constraints • Financial Assistance – USGS startup and maintenance • Sub-stewardship agreements

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