Transcript Mudflow Simulation of Savannah River - UT Web

Modflow Simulation on
Savannah River
GIS For Water Resources Term Project
(CE 394)
Seyoum Asemenaw
ModFlow
Defn:- Modflow is a 3-D finite difference GW flow model
that solves the continuity equation (Mod flow 2000).
Various mod flow packages:•
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BCF6 -- Block-Centered Flow Package
LPF1 -- Layer-Property Flow Package
RIV6 -- River Package
DRN6 -- Drain Package
WEL6 -- Well Package
GHB6 -- General Head Boundary Package
RCH6 -- Recharge Package
EVT6 -- Evapotranspiration Package
CHD6 -- Time-Variant Specified-Head Package
HFB6 -- Horizontal Flow Barrier Package
SIP5 -- Strongly Implicit Procedure Package
Term Project Goals
The major objectives are:• To build a modflow interface geodatabase schema
• To show the relationships between various feature classes
• To show a time series analysis using Modpath
ModPath:-calculate streamlines and travel times along
streamlines within the ModFlow daomain.
Data sources:
• Savannah River Authority
• USGS website
• CRWR
Savannah River Site
Building a Modflow Mesh (Fishnet)
Fishnet in Workstation Arc/Info
Building Fishnet
The fishnet prompts are: Arc: generate f2
Generate: fishnet
Origin Coordinate (x, y): 437005,3681499 m
Y-Axis coordinate (x,y) : 437005,3682990 m
Cell Size (width, Height) 91.44,91.44 m
Number of Rows, columns: 15,22
Generate: quit
Polygon construction
Arc: build f2
Generate :quit
Resulting Mesh in ArcMap
Modflow Interface Data Model
(Developed by Gil Strassberg)
Modflow Schema in Visio 2000
From Schema to Repository
Applying the Schema to Savannah
River Data
ModFlow River Package
ModFlow General Head Boundary
ModFlow Well Package
ModPath Simulation
ModFlow
Special thanks to:• Gil Strassberg
• Dr. David Maidment
• CRWR crew