HYDRO21545

• Permit No: M1984041
• IBM Index Class Name: Hydrology
• Doc Date: 1/23/2001
• Doc Name: CENTEX EAGLE GYPSUM CO LLC 1645A 100 YEAR 24 HOUR P4 SYSTEM MINING
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
Capyrgh11B9e Pemele J. Schxeb
Crvi Software Oesp
Spillway Elev Gffi length LeR Right Bottom
(R) Sideslope Sideslope Width (R)
6,860.00 25.00 2.00:1 2.00:1 10.00
Pertorated Riser
~~ Riser Height Bamel Barrel Barrel Slope Number of
Diameter R
( ) Diameter
Length (ft) (%) Manning's n Spillway Elev Holes per
(in) (in) Elea
12.00 15.00 12.00 200.00 2.00 0.0240 6,860.00 4
Pond Results:
Peak Elevation: 6,861.59
H'graph Detention Time:
_ ~ ~ ~ ~ ~ ~ 0.61 hrs
Pond Model: (STRS
Dewater Time: 0.82 days
Trap Efficiency: 31.19
Elevation-Capacity-Discharge Table
L'Pwatering time is ra/culated from peak stage to lowest spillway

Elevation Area

(ac) fapadty

(ac-R) Discharge

(~) Dewater
Time
(hrs)
6,845.00 0.000 0.000 0.000 Top of Sed. Storage
6,845.50 0.000 0.000 0.000
6,846.00 0.000 0.000 0.000
6,846.50 0.000 0.000 0.000
6,847.00 0.000 0.000 0.000
6,847.50 0.000 0.000 0.000 Low hde SPW #2
6,848.00 0.000 0.000 0.019 0.15
6,848.50 0.001 0.001 0.026 0.15
6,849.00 0.001 0.001 0.051 0.15
6,849.50 0.001 0.002 0.063 0.10
6,850.00 0.001 0.002 0.092 0.10
6,850.50 0.002 0.003 0.109 0.10
6,851.00 0.003 0.004 0.141 0.10
6,851.50 0.004 0.006 0.161 0.15
6,852.00 0.005 0.008 0.179 0.15
6,852.50 0.006 0.011 0.194 0.20
6,863.00 0.008 0.015 0.208 0.20
6,853.50 0.010 0.019 0.221 0.25
6,854.00 0.011 0.024 0.233 0.30
6,854.50 0.013 0.031 0.245 0.30
6,855.00 0.016 0.038 0.256 0.35
~2
Filereme: 1646A_P4-100-24.sc4 Printed 01-19-2001