2018-08-08_PERMIT FILE - C1982056 ‎(18)‎

• Permit No: C1982056
• IBM Index Class Name: Permit File
• Doc Date: 8/8/2018
• Section_Exhibit Name: EXHIBIT 13 GROUND WATER MODEL DOCUMENTATION
• Media Type: D
• Archive: No

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7.0 WATBAL Program User_g Model Des_criQtion
I
~ ~ 7.1 Qverv_;gw
~ WATBAL is an empirical model for simulation of streamflow
quantity and quality in a network system for a given drainage
~~ area or region. The model contains two modules: WATBALC and
~ WATBALP. WATBALC is an water-balance accounting program which
performs the steamflow computations. It can be optionally used
~ to calibrate the available hydrological data for subsequent
prediction made calculations using WATBALP. WATBALP is a
prediction program which uses the calibration data produced by
~ WATBALC and other mine inflow related data supplied by the user
~ eo assess future streamflow quality and quantity in the network
• system.
In the WATBAL model (both WATBALC and WATHALY), monitoring
~ stations that
considered to
of a stream rn
"begin" node,
downstream of
have data on streamflow and/or water quality are
be nodes on the network. The first node upstream
etwork is called a "begin" node. If a node is a
it has no node upstream from it. The last node
a stream network is called an "end" node. If a
~ node is an "end" nodr, it has no node downstream from it. In
~ this model, a stream network can have several 'begin' nodes but
only one 'end" node. In its present form, the model can simulate
~ a stream network of up to 50 nodes.
~ Presently, the WATBAL model can perform a node-to-node water
balance quantity and quality analyses. The analysis results
~• include tabulation of input data, computed values and the
diFferences of these two. For the computed values, the user carp
Ex. 13-1