FLOOD09085

• Designation Number: 97
• County: Adams
• Community: Thornton
• Stream Name: Grange Hall Creek
• Basin: South Platte
• Title: Major Drainageway Planning - Grange Hall Creek, Phase B, Thornton, Adams County
• Date: 12/1/1977
• Designation Date: 1/19/1978
• Floodplain - Doc Type: Floodplain Report/Masterplan

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TO INUNDATfON FROM
SOUTH PLATTE RIVER

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STA. 13+00 TO STA. 0+00
100 YR. DISCHARGE = 2200 cfs
A~G. VEL9C-.!!'!' M~IN C~AN~_" =LUps

FLOOD PLAIN BASED UPON FUTURE DEVELOPMENT CONDITlONS
RUNOFFW!TH EXISTING DRAINAGE F^CILITlES.
SEESflEET 1 fOR LEGEND.
SEE SHEETS 27. 28, 29 AND 30 FOR TYPICAL CKANNEL
SECTIONS AND IMPROVEMENT DETAILS.
THIS DRAWING IS A MASTER PLANNING SHEET REPRESENT!NG
PRELIMINARYANO-CONCEPTlJALENGINEERINGANDISSUBJECT
TOCHANGE. ITSHALLNQTBElJSm-FOR'CONSTRUCTION
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DESlSNED~__DATE?hZ
DRAWN LLY DATE --B1-1
~~E~~ED <<J~~ DATE 3/4:7:
R"VlS"U_____DATE_

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GROUND ~ONTROL SURVEY BY
AERIAL PHOTOGRAPHY BY
TOPOGRAPHIC MAPPING BY
CONTDUR INTERVAL'2FEET

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HYDRO-TRIAD, LTD,
7500 W_ Mississippi Ave
Suite 010 Building A
Lakewood, COlD, 80226
303-934-2477

URBAN DRAINAGE AND FLOOD CONTROL DISTRICT

MAJOR DRAINAGEWAY PLANNING

PLAN a PROFILE

BELL MAPPING co.
DENVER, COLORADO
DUE FLOWN:JAN,14,I'H6

GRANGE HALL CREEK

CITY OF NORTHGLENN CITY OF THORNTON

13+00 TO 0+00

ADAMS COUNTY

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DWG, NO, GH-II
SHEETI30F30