Expires:No;;457420
FGUS55 KSTR 260109
RVFSTR
COLORADO BASIN RIVER FORECAST CENTER  
NATIONAL WEATHER SERVICE, SALT LAKE CITY, UTAH
0026 UTC Mon Jul 26, 2021

** INTERNAL NATIONAL WEATHER SERVICE PRODUCT FOR GUIDANCE PURPOSES ONLY **

FORECASTS BASED ON LATEST SIMPLIFIED DAMBREAK PROG ISSUED BY HRL

*** FGZ HSA

. . . D A M  B R E A K  F O R E C A S T . . .


MILLETT SWALE on MILLETT SWALE


Time and Flood Wave Forecast:

            Forecast  Distance      Time       Est      Time     Depth      Peak
               Point      From        to     Flood        to        of      Flow
                           Dam     Flood     Stage      Peak      Peak
                          (mi)     (min)      (ft)     (min)      (ft)     (cfs)
--------------------------------------------------------------------------------
             DAMSITE      0.00         0       3.5         5       7.4    110837
              TAYLOR      4.00        66       3.5        72       4.7     21029
           SNOWFLAKE      6.00       118       3.5       122       4.5     15813


Comments:

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Additional Information:

Inputs for This Forecast:

          Source: STR
          Scenario: LF
          Starting Water Surface: 5719.2
          Bottom of Breach Width: 5708.4
          Starting Volume: 320
          Starting Surface Area: 80
          Time of Failure: 4.8
          Additional Flow to Add: 10
          Final Breach Width: 2250
          Dam Type Code: 0
          Comments: 'Used dambatch.tcl'

Dam Information:

          NID ID: AZ00059
          Dam Name: MILLETT SWALE
          State ID: 9
          River: MILLETT SWALE
          County: NAVAJO
          Latitude: 34.430556 (34 25 50)
          Longitude: -110.04111 (110 2 28)
          Elevation: 5707.2
          Topo Map: SHOW LOW
          Return Flow Region: 11
          Drainage Area: 40
          Emergency Action Plan: 0     (None)
          Comments: 'Used dambatch.tcl'
          Updated: 07/03/2002
          HSA: FGZ
          RFC: CBRFC
          Dam Type: RE
          Dam Height: 24
          Structural Height: 0
          Hydraulic Height: 0
          NID Height: 24
          NID Storage: 2104
          Max Storage: 2104
          Normal Storage: 0
          Dam Length: 2500
          Surface Area: 200
          Max Discharge: 11559
          Volume Material: 0
          Core: BLANK
          Foundation: BLANK
          Spillway Type: U
          Spillway Width: 200
          Owner Name: SILVER CREEK IRRIGATION DISTRICT
          Owner Type: P
          Year Completed: 1958
          Purposes: CD
          Private on Federal Land: N
          Downstream Hazard: H
          Inspection Date: 04/18/1997
          State Regulated: Y
          Source Agency: AZ
          Section T R: S20  T12N  R22E