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BASINS Better Assessment Science Integrating point and Non-point Sources. Use of NHD in BASINS Presented at the NHD Application Symposium. Ed Partington EPA/Office of Water Henry Manguerra/Tetra Tech. EPA’s Office of Science and Technology. Mission

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Presentation Transcript
slide1

BASINS

Better Assessment Science Integrating

point and Non-point Sources

Use of NHD in BASINS

Presented at the

NHD Application Symposium

Ed Partington EPA/Office of Water

Henry Manguerra/Tetra Tech

slide2

EPA’s Office of Science and Technology

  • Mission
    • To provide technical assistance and support to the Agency’s Water Quality Criteria and Standards Program
    • Develop methods, models, and procedures to support nationwide watershed studies (TMDLs, etc.)
    • To develop guidance on specific water quality issues
why basins was developed tmdl s
Why BASINS Was DevelopedTMDL’s

1998 303(d) list cycle contained 21,845 waters with 41,318 separate impaired segments

Top Five Impairments - Sediments, Pathogens, Nutrients, Metals, Dissolved Oxygen

basins
BASINS

Integrates These Components With a GIS

  • 1. Watershed and Water Quality Models

HSPF, SWAT, QUAL2E, PLOAD

  • 2. Assessment Tools and Utilities

Target/Assess, Data Mining, Watershed Delineation, NHD Data Import, ...

  • 3. National databases

DEM, GIRAS LULC, STATSGO, RF1, NHD, PCS, STORET, 100s weather stations, …

  • 4. Post-processing and Output Tools

GenScn, WDMUtil, Models Reporting Function, ArcView

basins 3 0
BASINS 3.0
  • New and Updated Models and Tools

SWAT, PLOAD, WDMUtil, HSPFParm

  • Modularization (extensions)
    • Convert 700+ scripts into 20 extensions
    • More flexible - use of an extension manager
    • More open – encourage users and other developers to develop other extensions
    • Easy to update
    • Smaller initial core system – user may increase complexity as needed (e.g. use and non-use of Spatial Analyst)
  • New and Updated Data
    • GIS Grid Format Data (DEM, GIRAS LULC, STATSGO)
    • EPA/OW’s Permit Compliance System
    • National Hydrography Dataset
slide6

Schematic Diagram of BASINS 3.0

BASINS

GIS Interface

Tools/

Utilities

Watershed Delineation

Automated w/ SA

Watershed Delineation

Manual - AV only.

Generate Watershed Properties

QUAL2E

SWAT

WIN HSPF

PLOAD

GenScn

(Post-processor)

Output and Analysis

slide7

BASINS 3.0

Expanded Features and Utilities of HSPF and SWAT

WIN

HSPF

Interface

SWAT

Interface

WDM Utility

(weather data editor)

Manual or Automatic

Watershed Delineator

Weather

Generation

(optional)

HSPF Parm

HSPF

V. 12

SWAT

HSPF

EXPERT

GenScn

(Post-processing)

Output and Analysis

automated watershed delineator
Automated Watershed Delineator
  • Requires ArcView Spatial Analyst Extension
  • Ability to “Burn-in” Stream Network into topography

-Stream network superimposed onto DEM to define stream network and to eliminate sinkholes and zero elevation to determine watershed boundaries

  • Ability to control watershed area by selecting a mask to zoom in on the amount of detail of the stream network and the size and number of subwatersheds of the study area.
  • Automatically calculates basic watershed characteristics from the DEM and other subwatershed themes
slide9

Automated Watershed DelineationTool

Specify DEM Source

Designate Watershed Boundary

(mask)

Superimpose Stream

Network for the Burn-In

(RF1, route.reach in NHD)

Threshold to control

drainage density

Modify subwatershed

outlets. Add Reservoirs

and Point Sources

manual watershed delineation
Manual Watershed Delineation
  • Non Spatial Analyst Version
  • Stream Theme is required (e.g. NHD)
    • Basis for drawing drainage area
    • Stream network
    • Stream characteristics
  • Suite of Editing Tools
rules of delineation
Rules of Delineation
  • Delineate so that the pour point of the subwatershed is just upstream of the confluence of two segments
  • Delineate so that a subwatershed will only have a maximum of two upstream watersheds (upstream left and upstream right)
  • Delineate hydrologically connected subwatersheds
  • Delineate so that only one subwatershed is most downstream (e.g. single pour point, no parallel systems)
  • Delineate so that a subwatershed is always associated with a unique stream segment
slide13

B

2

2

3

3

C

1

1

A

Not so Good Delineation

Good Delineation

Rule: Pour Point just upstream of confluence

rules of delineation1
Rules of Delineation
  • Delineate so that the pour point of the subwatershed is just upstream of the confluence of two segments
  • Delineate so that a subwatershed will only have a maximum of two upstream watersheds (upstream left and upstream right)
  • Delineate hydrologically connected subwatersheds
  • Delineate so that only one subwatershed is most downstream (e.g. single pour point, no parallel systems)
  • Delineate so that a subwatershed is always associated with a unique stream segment
slide15

B

C

B

C

A

D

A

D

E

Not so Good Delineation

Good Delineation

Rule: Maximum of Two Upstream Watersheds

rules of delineation2
Rules of Delineation
  • Delineate so that the pour point of the subwatershed is just upstream of the confluence of two segments
  • Delineate so that a subwatershed will only have a maximum of two upstream watersheds (upstream left and upstream right)
  • Delineate hydrologically connected subwatersheds
  • Delineate so that only one subwatershed is most downstream (e.g. single pour point, no parallel systems)
  • Delineate so that a subwatershed is always associated with a unique stream segment
slide17

B

B

2

2

3

3

C

C

1

A

1

A

Not so Good Delineation

Good Delineation

Rule: Hydrologically Connected Watershed

rules of delineation3
Rules of Delineation
  • Delineate so that the pour point of the subwatershed is just upstream of the confluence of two segments
  • Delineate so that a subwatershed will only have a maximum of two upstream watersheds (upstream left and upstream right)
  • Delineate hydrologically connected subwatersheds
  • Delineate so that only one subwatershed is most downstream (e.g. single pour point, no parallel systems)
  • Delineate so that a subwatershed is always associated with a unique stream segment
slide19

C

B

C

B

A

Not so Good Delineation

Good Delineation

Rule: Single Subwatershed Downstream

rules of delineation4
Rules of Delineation
  • Delineate so that the pour point of the subwatershed is just upstream of the confluence of two segments
  • Delineate so that a subwatershed will only have a maximum of two upstream watersheds (upstream left and upstream right)
  • Delineate hydrologically connected subwatersheds
  • Delineate so that only one subwatershed is most downstream (e.g. single pour point, no parallel systems)
  • Delineate so that a subwatershed is always associated with a unique stream segment
slide21

C

B

2

2

3

3

D

C

B

A

1

1

A

Good Delineation

Not a Valid Delineation - System

will not allow you to split a segment

into two subwatersheds.

Rule: Unique Segment

nhd rule buster

Violation of the 5th Rule

NHD - Rule Buster
  • Rule: Subwatershed per unique segment

2

2

3

1

1

RF 3 network (3 segments)

NHD network (2 segments)

new algorithm
New Algorithm
  • Eliminate the rule “subwatershed per unique segment”
  • Use dynamic segmentation concept
new algorithm1
New Algorithm

A

B

2

1

C

D

a

b

stream network recreated for modeling

c

d

new algorithm potential linkage to other data
New Algorithm – Potential Linkage to Other Data

Reach Address Database (RAD)

Reach Segments

Monitoring Locations

Discharge Facilities

nhd lakes
NHD Lakes

Yellow Creek

nhd lakes1
NHD Lakes
  • Beware! – Wrong Delineation

Yellow Creek

nhd lakes2
NHD Lakes
  • Correct Delineation: Delineate around the lake
nhd download tool
NHD Download Tool
  • User selects CUs
  • System initiates FTP session and download NHD zipped files
  • Untar/Unzip files
  • Convert to shapefile and Project
  • Add to BASINS View
nhd download tool results
NHD Download Tool - Results
  • In BASINS Project
    • Route.rch theme
    • Rflow table
  • In BASINS directory
    • NHD coverage in decimal degree
    • NHD shapefiles and rflow dbf file
nhd download tool files
NHD Download Tool - Files
  • B3dm_nhdimport.avx
  • B3import.dll
  • B3import.ini
  • Tar.exe, gzip.exe
nhd download tool ini file
NHD Download Tool – INI file
  • ;
  • [DATA TYPE]=NHD
  • [ITEM FIELD]=Cu
  • [TRANSFER PROTOCOL]=FTP
  • [TRANSFER TYPE]=FTPBINARY
  • [SERVER NAME]=edc.usgs.gov
  • [PROXY NAME]=
  • [PROXY BYPASS]=
  • [USER NAME]=anonymous
  • [USER PASSWORD]=basins@epa.gov
  • [REMOTE PATH]=/pub/data/nhd/fod_cache/228100/arc/
  • [FILE EXTENSION]=tgz
  • [DATA FORMAT]=coverage
  • [ARCHIVE FORMAT]=tar,gzip
  • [ARCHIVE EXTRACT PATH]=%ITEM VALUE%\
  • [DATA NAME]=nhd
  • [DATA LAYERS]=route.rch,region.lm,region.rch,region.wb,route.drain,route.lm,polygon,arc,labelpoint,node
summary
Summary
  • Modeling - Primary use of BASINS particularly for TMDL development
  • Use of the latest/greatest/site specific data
  • “So much Promise” (Data Integration)
    • Data quality and consistency
    • NHD Georeferencing (Impaired streams, monitoring stations, discharge facilities, etc.)
    • Data completeness, generation (e.g. stream characteristics, higher resolution, etc.)
    • Data encoding, storage, and distribution
summary1

NHD

NED

WB

NED-H

Summary

BASINS

Website

RAD

STORET

PCS

WQ Monitoring

DMR

Location Data

303d/305b

Download Tools

GeoDatabase

LAN

BASINS

Desktop

TMDL Development

303(d) Listing Analysis

305(b) Analysis

Etc.