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GIS in Environmental and Water Resources Engineering . Research Progress Report March 10, 1999. Texas

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GIS in Environmental and Water Resources Engineering

Research Progress Report

March 10, 1999

Texas data and water modeling: Hudgens, Mason, Davis Jonsdottir, Gu, Niazi

Environmental Risk Assessment: Hay-Wilson, Romanek, Kim

Global runoff: Asante, Lear

Nonpoint source pollution: Melancon, Osborne

Flood hydrology and hydraulics: Ahrens, Andrysiak, Azagra, Perales, Tate

Internet: Favazza,Wei

Research AreasTexas data and water modeling: Hudgens, Mason, Davis Jonsdottir, Gu, Niazi

Environmental Risk Assessment: Hay-Wilson, Romanek, Kim

Global runoff: Asante, Lear

Nonpoint source pollution: Melancon, Osborne

Flood hydrology and hydraulics: Ahrens, Andrysiak, Azagra, Perales, Tate

Internet: Favazza,Wei

Research Areas

Brad Hudgens

Geospatial Data Development for Water Availability Modeling

Quality Control(the good)

Quality Control(the bad)

Quality Control(the ugly)

WRAP

David Mason

Geospatial Data Development for Water Availability Modeling

Progress on WAM
  • Finished parameter calculations for Nueces Basin
  • Finished parameter calculations for San Antonio Basin (except for one point..see next slide)
  • Half way through parameter calculations for Guadalupe Basin......but......
New Problems

Areas for Guadalupe Gages

  • Discovered discrepency in area numbers of Guadalupe basin
  • Error is most likely due to resolution of DEM used.
  • Currently waiting for 30m DEM to redo parameter calcs.

Trinity River TMDL

Subtask on Network AnalystKim Davis

Underway
  • HydroNet Programming
    • Exciting new ways to sort river networks
      • Avenue “QUERY” command is hard to use
      • Lists are inefficient
  • TMDL
    • Use Arc/Info to check network integrity
    • Investigating RIT
Reach Indexing Tool
  • Dynamic Segmentation Tool for ArcView developed at the Research Triangle Institute in North Carolina
  • Will be digging into it in the next couple of weeks
  • Snap Assessment
    • Labor Intensive
    • Easy to Use
Arc/Info 8.0 Beta Class
  • Arc/Info will look like ArcView--GUI
  • All the good analysis properties of Arc/Info are maintained
  • Super-easy data management
    • Move Stuff
    • Rename Stuff
    • Project on the fly (from anything to anything)

Jona Finndis Jonsdottir

Geospatial Data for Total Maximum Daily Loads

Checking the Connectivity of the River Network

By using the trace function in Arc Info all arcs connected to the endpoint could be identified.

White and yellow arcs form together the river network for the Trinity Basin.

The yellow lines represent the arcs connected to the outlet point of the basin.

The white lines represent branches of the network that were not connected to the main stem of the network because of small gaps.

Then by comparing the picture to a similar view in Arc View, small gaps were identified and filled.

After filling some gaps, the network is ready!

According to the trace function in Arc Info, we now have a single line connected river network for the Trinity basin!

Addtopo & Txmesh

I improved my script, Addtopo.

By using Addtopo along with the grid Txmesh and the hotlink option in Arc View, DRGs can be added to the view with one click!

Each maps extent have been cut down so that two or more DRGs can be viewed without disturbing borders...

And where to get Addtopo & Txmesh!

It’s all on my website:

http://www.ce.utexas.edu/stu/jonsdoj/research/hotlink.html

If you want the program and the grid then go to my website, and click the icons for Addtopo and Txmesh.

Addtopo contains the Avenue code

Txmesh contains a zipped grid of Texas in geographic, utm 14 and utm 15 projections.

Instructions on how to use this are also on the website.

Building a Time-Series Data Bases for TxRR Precipitation-Runoff Model

By Richard Gu

Source data:
  • daily precipitation data
  • daily stream flow data
Database Software: HEC-DSS
  • Main components:
    • DSSUTL: import & export, copy, delete, or edit data in a DSS file.
    • DSPLAY: display data from a DSS file in a tabular or graphical form.
    • REPGEN: retrieval and representation of data from a DSS file.
    • DSSMATH: mathematically manipulating DSS data.

Implementation of Pre-processing

Source Data CD

Spatial Information

of gages

Rainfall data &

Stream flow data

Watershed Region

Definition

Text file

Arcview GIS

DSS import:

DSSUTL

Develop Thiessen

Polygons

DSS file

Export weighted area percentage

for each gage. (gage::area%)

DSS

DSS

Rainfall & stream

flow, area%

DSPLAY Macro

NEW DSS file with

Average rainfall &

stream flow data

for each watershed

DSPLAY

DSSMATH

DSPLAY Macro

REPGEN

Data Retrieval

Customized Reports

Text file converter

TxRR Input File

Future work
  • Short term goal: Implement the GIS & DSS function components
  • Final goal: Software Integration
    • Simple approach: MS-DOS batch file
    • Challenge: C system calls and user interfaces development with Visual C++
Announcement

I have installed HEC-DSS system on C drive of one PC at PRWR under directory \HECDATA\ & \HECEXE\. Please do not delete them.

Surface/Subsurface Modeling

Progress Report

Shiva Niazi

3/10/99

Bureau of Economic Geology ProjectArea of Interest

Carrizo-Wilcox Aquifer

Bastrop, Lee and

Milam Counties

Underlying HUC8

Subwatersheds

Colorado River

Brazos River

Area of Interest

Progress

NPS Analysis/

Accumulated Flow

CRWR

Pre-Pro

DEM

Flow Dir. Grid

+

Accumulated Flow Grid

Runoff Grid

Current Work
  • Locating river gages and flow rates immediately upstream of area
  • Obtaining DOQs for analysis of river widths
Texas data and water modeling: Hudgens, Mason, Davis Jonsdottir, Gu, Niazi

Environmental Risk Assessment: Hay-Wilson, Romanek, Kim

Global runoff: Asante, Lear

Nonpoint source pollution: Melancon, Osborne

Flood hydrology and hydraulics: Ahrens, Andrysiak, Azagra, Perales, Tate

Internet: Favazza,Wei

Research Areas

Lesley Hay Wilson

Spatial Environmental Risk Assessment

Current Research Status
  • Still working on the site conceptual model
    • COC list completed (80 chemicals)
    • developing the receptor areas for the lube plant site conceptual model
    • formatting Excel calculation sheet and moving some tables (e.g., receptor characteristics, chemical properties) into the SCM access database
    • Other SCM database changes for pathway completeness tracking
MHR project team
  • Working on database issues (team)
    • meeting February 22nd
    • additional refinements to the measurements database
    • team CD May 1999
  • PaDEP Meeting March 10th
    • presented the spatial site conceptual model
    • other UT projects presented
    • new PaDEP CD and workshop August 1999

Andrew Romanek

Building the Foundation for Environmental Risk Assessment at the Marcus Hook Refinery Using Geographic Information Systems

March 12, 1999

Activities
  • Database meeting in Atlanta
  • Job search
  • THESIS
  • Now I am going skiing

Spatial Analysis of Sources and Source Areas on Marcus Hook

Progress report by Julie Kim

Friday, March 12, 1999

Current Work
  • Contoured April/May 1996 and December 1998 COC measurements for 8 COCs in groundwater for 3 sections of the refinery:
    • Lube Plant
    • North of the railroads
    • South of the railroads
  • Used each section as barriers when contouring

2. Choose appropriate output extent

1. Select points to contour

3. Select barrier that is identical to your output extent

4. Final result: contours end at the railroads, creek, and river

Left: Contours of benzene for each section WITHOUT using each section as barriers

Right: Contours of benzene for each section USING each section as barriers

Future Work
  • Focus on the hydrology project
  • Analyze soil data for the 40 COCs detected in the Lube Plant
  • Analyze any COCs detected in NAPL in the Lube Plant
  • Work on tasks outlined in the Marcus Hook Action Plan
Texas data and water modeling: Hudgens, Mason, Davis Jonsdottir, Gu, Niazi

Environmental Risk Assessment: Hay-Wilson, Romanek, Kim

Global runoff: Asante, Lear

Nonpoint source pollution: Melancon, Osborne

Flood hydrology and hydraulics: Ahrens, Andrysiak, Azagra, Perales, Tate

Internet: Favazza,Wei

Research Areas

Global Runoff RoutingEstimating Flow Velocity

Kwabena Asante

Dispersion in Routing
  • Checked the effect of decomposing a reach
  • Coded dispersion into source to sink model
  • Working on dispersion type cell to cell code using the same approach as source to sink
Diffusion Type Routing

Perform routing from

upstream cells using flow

accumulation do define

order of computation

Calculate response from each

cell to the next cell downstream

Sample response coefficients

and apply to inflow to get discharge

For each cell, aggregate discharge from

all upstream cells

(convolve in time and space)

Mary Lear

Flow Direction Data from Fine

to Coarse Resolution

Wonderful Work

  • Big meeting with researchers from UNH
  • More Goals include:
    • Finding Diagonals, Flat Histogram
    • Creating River Networks
    • Reaching the Ocean
    • Determining Flow Length
    • Solving Connectivity Problems

Global T42 Mesh

The river network with 2.8 cells for the Niger River Basin illustrates areas of continued work.

Texas data and water modeling: Hudgens, Mason, Davis Jonsdottir, Gu, Niazi

Environmental Risk Assessment: Hay-Wilson, Romanek, Kim

Global runoff: Asante, Lear

Nonpoint source pollution: Melancon, Osborne

Flood hydrology and hydraulics: Ahrens, Andrysiak, Azagra, Perales, Tate

Internet: Favazza,Wei

Research Areas

Patrice Melancon

Pollutant Loading Model for Tillamook Bay

Patrice’s Progress(not to be confused with Pilgrim’s Progress of Little Women fame)
  • Draft Thesis has been submitted
    • Appendices 85% complete, but not completely transferred to thesis
  • Have been learning in’s and out’s of HMS and RAS in Hydraulic Engr Design class; helping students during lab time
  • Interviews coming along nicely
Still to Come…...
  • Reformat report to meet TBNEP req’mts
  • Burn final CDROM to submit with report
  • Finishing touches to graduate
    • Incorporate reader’s comments
    • Final printing/binding
    • All the paperwork……
  • Update webpage

Katherine Osborne

Water Quality Master Planning for Austin

Review Steps

  • Compile land use maps for area.
      • City of Austin will be providing them on Monday.
  • Collect all maps and coverages necessary to create “draft” model of Barton Creek.

Almost complete

  • Also, set up Data Dictionary and Progress Report on web page to keep COA up to date.

Model Ingredients (Inputs)

DEMS (and subsequent CRWR-PrePro manipulations: flow direction, flow accumulation, etc)

Land use shapefiles

Impervious Cover Grid

USGS Station locations

Precipitation Data Files

Using Christine’s Recipes (Scripts) with “fresh” ingredients

Runoff, Flow, and Watershed Grids with Stations Shapefile.

Next Steps

  • Investigate Christine’s scripts and assumptions, as well as Avenue.
  • Move onto loads and BMP removals.
  • Obtain most up to date shapefiles from COA

BMP locations, Recharge zones, EII sites, Water quality exempt zones and Water quality protection zones

  • COA meeting March 26.
Texas data and water modeling: Hudgens, Mason, Davis Jonsdottir, Gu, Niazi

Environmental Risk Assessment: Hay-Wilson, Romanek, Kim

Global runoff: Asante, Lear

Nonpoint source pollution: Melancon, Osborne

Flood hydrology and hydraulics: Ahrens, Andrysiak, Azagra, Perales, Tate

Internet: Favazza,Wei

Research Areas

Seth Ahrens

Flood Forecasting in Houston

Digitizing StreamsOther Activities
  • Sent final models to HEC
  • Sent DRG data to HEC
  • Finished tweaking ModClark code
  • THESIS

Peter Andrysiak

Flood Risk Assessment

Expected annual damage

H

f2(H|Q)

Q

Computation of Expected Annual Damage

Q

D*

H*

Q*

D

f3(D|H)

f1(Q|p)

dp

H

p

p*

H*

Q*

  • For interval,dp, find damage D(H*(Q*(p*)))
  • Integrate over p with (1)
  • Repeat this with sufficient realizations to get stable statistics for mean De and 25% and 75% values

(1)

  • Generate a realization
    • 2 random numbers for m,s for f1(Q|p)
    • 1 number for “shift” in f2(H|Q)
    • 1 number for “shift” in f3(D|H)

H

f2(H|Q)

Q

Improvement using GIS

Q

H*

Q*

f1(Q|p)

dp

p

p*

Q*

  • GIS-based calculation of flood likelihood and damage at each location
  • Risk-based flood plain boundary zone

Esteban Azagra

Regional Hydraulic Model for the City of Austin

Current Work
  • Procedure for floodplain mapping
  • HEC-RAS and previous works
  • Define area of study: Bull Creek
Current Work
  • 30 m vs. 10 m DEM
  • Merge and project to UTM
Current Work
  • Cross-Sections: length, elevation
Future Activities
  • Line coverage of the stream centerline: digital orthophotograph
  • Cross-sections
  • Run Pre-pro?

Incorporating the Green-Ampt Method for Infiltration into CRWR-prepro

Jerome Perales

Variables in the Green-Ampt Infiltration Model

The Green-Ampt method allows for an approximate physical theory of infiltration with an exact analytical solution where:

By using a look up table related to the soil types of a given region, the Green-Ampt method can be applied to calculate infiltrationUSDA Soil Classes

There are 719 STATSGO texture names. They have all been assigned one of the 12 USDA classes and one category called other. The parameters of the other category are to be determined.

Eric Tate

Mapping Flood Water Surface Elevation

Recent Activities
  • Finalizing thesis first draft
  • Wrote last Avenue script: used for delineating a grid-based floodplain. Users can view the floodplain extent with an orthophoto base map, and click on the grid to also determine flood depth.
Waller Creek 100 Year FloodplainTexas data and water modeling: Hudgens, Mason, Davis Jonsdottir, Gu, Niazi

Environmental Risk Assessment: Hay-Wilson, Romanek, Kim

Global runoff: Asante, Lear

Nonpoint source pollution: Melancon, Osborne

Flood hydrology and hydraulics: Ahrens, Andrysiak, Azagra, Perales, Tate

Internet: Favazza,Wei

Research Areas

David Favazza

Map-Based Modeling on the Internet

LCRA Service Area Online (Part 1)
  • Meeting at LCRA
  • Dynamic Chart Creation option completed, works well
LCRA Service Area Online (Part 2)
  • Recognized limitations of MO/VB technology for user inputs and database retrieval
  • Learning Visual InterDev 6

Kevin Wei

Displaying Environmental Maps on the Internet

Kevin Wei

03/12/99

Finished the seminar on 02/24

Name

Information Distribution>

Working on my report.

Hopefully it can be turned in on Wednesday 03/17

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