FLOOD07736

• County: Adams
• Community: Westminster
• Stream Name: Big Dry Creek and Area Creeks
• Basin: South Platte
• Title: Flood Hazard Area Delineation
• Date: 11/1/1986
• Prepared For: Westminster Area
• Prepared By: UDFCD
• Contract/PO #: &&
• Floodplain - Doc Type: Floodplain Report/Masterplan

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P12

6000

future conditions 100-year discharge profile ~ FUTURE BASIN CONDITIONS
Note: The '"
assumes the proposed future spillway configuration W
W LEGEND
for Standley Lake and a . base flow from the outlet '"
0
works of 430 cfs upstream of the confluence with :r
Walnut Creek at the Denver-Boulder Turnpike. A com- o
flow of 480 cfs from both Standley Lake z 100-YEAR
bined base ~
and Great Western Reservoir was added on downstream
:r 10-YEAR .._1_._1-
of the confluence with Walnut Creek. !::
;= 5-YEAR ---
W W
> 0 2-YEAR -------
<( ~
I- z= ::> ~
w - ... . ~ :r '"
0 11. 0 co I-
W '" Z > 0> -~ d
'" - 0 I ... ;= '"
l- ii:
'" W 0 m > wW
I -
co > - ;= OW
'" z <( w z :r z'" w
I 0 > <( wO z
'" z= <( o. w ~ ...
~ co z= '" <( ..J 0:. :r
'" - W 11.0
I - '" :r I- z 0- 0
- '" '" I-
- - 0", <(
0 ~
-<(
I
-.-.-.. ...
-.-.-.. ..-.-.- -.-.-.. ",.-.-.. .-'-.' -
.-.-.-.
---- 0
0
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--- --- ----- -. 0
- 0>
-- -- (0)
- I- -----
.- .-.. ..-._.-~ ---.-.-. -.-.-.. ",.-.-.-
----- ----- ----- ----- _..-'
.._1_.
., -- -- -. .
.--
----- .-
-----

12,000

(f)
lJ..
U
Z

w
CJ
0::
<l:
:r
~ 8000
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4000

2000

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0+00 60+00 120+00 180+00 240+00
HYDROLOGIC ANALYSIS BY,GREINER ENGINEERING STATIONING IN FEET, ABOVE i LIMIT OF STUDY

Greiner URBAN DRAINAGE 80 FLOOD CONTROL DISTRICT DISCHARGE
Engineering FLOOD HAZARD AREA DELINEATION BIG DRY CREEK
WESTMINSTER AREA

300+00

360+00

420+00

7/( STUDY LIMITS 100,000' ABOVE MOUTH
PROBABILITY PROFILES FIGURE
1-25 TO SHERIDAN BLVD. 1