FLOOD04584

• County: Eagle
• Community: Gypsum
• Stream Name: Eagle River
• Basin: Colorado Mainstem
• Title: Floodplain Analysis Eage River Estates
• Date: 9/1/1981
• Prepared For: Gypsum
• Prepared By: Eldorado Engineering
• Floodplain - Doc Type: Floodplain Report/Masterplan

l"LUUUWAY liATA, EAGLE RIVER -ESTATES AUG
PROFILE NO. 2

STATION

FLOODWAY
SECTION
AREA

ME,'N
VELOCIIY

WATER SURF,'CE ELEVATION
WITH WITHOUT DI FFERENCE
FLOODWAY FLOODWAY

mDm

17.000 683. 1048. 7.2 6238.3 6;237.6 .7
16.000 776. 1146. 6.6 6240.4 6239.7 .7
15.000 491. 1308. 5.8 6243.2 6242.6 .6
14.000 SIB. 1287. 5.9 6244.7 624A1.2 .5
13.000 752. 1550. 4.9 ' 6247..1 6246.5 .6.
12.000 137. 626. 12.1 6250.7 6250.2 .5
11.000 735. 2325. 3.3 6256.2 62:::-:;5.4 .B
10,000 929. IBB8. 4.0 6256.8 62~,}6 .1 .7
9.000 919. 2122. 3.6 6258.8 6258.3 .5
8.000 703. 2011. 3.B 6260.0 {,259.5 .5
7.000 534. IBB1. 4.0 6260.3 6239.8 ..
.~
,6.000 485. 1110. 6.8 6265.4 6264.7 .7
5.000 253. 774. 9.B 6266.8 6:?66.5 .3
4.000 90S. 2209. 3.4 6269.2 6268.4 .13
3.000 4<72. 1061. 7.1 6269.6 6269.0 .6
2.000 371. 1109. 6.8 6271.4 6270.8 .6
1.000 214. 8S5. 8.5 6272.6 6272..0 .6
FLOODWAY DATA, EAGLE FaVER ESTATES AUG
PROFILE NO. 3
------- FLOODWAY ------- WATER SURFACE ELEVATION
STATION WIDTH SECTION MEAN WITH WITHOUT DIFFEF'ENCE
AREA VELOCITY FLOODWAY FLOOD WAY
17.000 692. 1154. 7.1 6:238.5 6237.6 .9
16.000 793. 1306. 6.3 6240.6 6239.7 .9
15.000 503. 1387. 5.9 6243.3 6242.6 .7
14.000 524. 1374.. 6.0 6244.8 6244.2 .6
13.000 754. 1699. 4.8 6247.3 6246.5 .8
12.000 140. 669. 12.3 6251.0 6250.2 .8
11.000 749. 2533. 3.2 6256.5 6255.4 1.1
10tOOO 942. 2119. 3.9 6257.0 6256t1 .9
9.000 928. 2275. 3.6 6259.0 6258.3 .7
B.OOO 708. 2132. 3.9 6260.2 6259.5 .7
7.000 537. 1.979. 4.2 6260t5 6259.8 .7
6.000 498. 1227. 6.7 626~'j. 6 6264.7 .9
5.000 271. 794. 10.4 6266.9 6266.5 .4
4.000 909. 2408. 3.4 6269.5 6268.4 1.1
3.000 506. 1171. 7.0 6269.9 6269.0 .9
2.000 522. 1175. 7.0 6271. 6 6270.8 .8
1. 000 230. 933. 8.8 6272.8 6272.0 .8
FLOODWAY DA"TA, EAGLE RIVER ESTATES '""UG
PROFI LE NO. ,4
------- FLOODWAY ___M.___ WATER SURFACE ELEVATION
STATION WIDTH SECTI ON 11EAN WITH WI niOUT DIFFERENCE
AREA VELOCITY FLOODWAY FLOODWAY
17.000 709. 1394. 7.0 6238.9 6237.6 1 t3
16.000 818. 1656. 5.9 6241.0 6239.7 1.3
15.000 527. 1539. 6.3 6243.4. 6242.6 1.0
14.000 539. 1562t 6.2 6245.2 6244.2 1.0
13.000 757. 2009. 4.8 6247.7 6246.5 1 t2
12.000 147. 765. 12.7 6251.6 6250.2 1.4
11.000 779. 3006. 3.2 6257.1 6255.4 1.7
10.000 970t 2645. 3.7 6257.6 6256.1 1.5
9.000 946. 2613. 3.7 6259.3 6258.3 1.0
8.000 717. 2391. 4.1 6260.5" 6259.5 1.0
7.000 543. 2193. 4.4 6260.9 6259.3 1.1
6tOOO 52:{. 1472. 6.6 6266t1 6264.7 1.4
5.000 439. 1036. 9.4 6267.5 6266.5 1.0
4.000 911. 2775. 3.5 6270.0 6268.4 1.6
3.000 538. 1416. 6.9 6270.4 6269.0 1.4
2tOOO 598t 1383. 7.0 6272.0 6270.8 1.2
1.000 265. 1031. 9.4 16273.2 6272.0 1.2

TABLE 3

FIA Table 1

Floodway Data

Eagle River Estates
Flood Plain Analysis
Gypsum, Colorado

r
!
f~i
1::<1
r::.i
[.

,
L
f
!
!
!
i
!
j
;
I

TABLE 4

FIA Table 2 - Flood Insurance Zone Data

Eagle River Estates Flood Plain Analysis
Gypsum. Colorado

f"
!
!
i
I
I
I
i
I
\
!
;

FLOOD INSURANCE ZONE DATA FOR EAGLE RIVEr, ESTATES AUG

I

FLOOD HAZARD FACTOR FOR ENTIRE REACH USING SECTIONS

SECTION CUMULATIVE
NUMBER DISTANCE

i,
I
[.
!
r
i
i
~
("

17.000
16.000
15+000
14.000
13.000
12.000
11.000
10.000
9.000
8.000
7.000
6.000
5.000
A.OOO
3.000
2.000
1.000

O.
360.
750.
1.120.
16l)5.
2365.
3295.
:~710.
4430.
5024.
5269..
7019.
7224..
7554.
7934.
8249.
8539.

ELEVATION DIFFERENCE
BETWEEN BASE FLOOD AND
10 2 0.2

-.87
-.8S
-+71
-.62
,....-..78
-.76
-1.11
-.93
-.67
-.66
-.71
-.92
-.36
-1.10
-.87
-.76
-.82

-+22
-.23
14-.16
-.17
-.20
-+30
-.28
-+-25
-+17
-.17
-.IS
-.24
-+08
-.30
-.25
-.18
-.21

.42
.44
.29
.35
.41
.67
.62
..56
.36
.36
.39
.49
.68

.55

.51
+40
,40

WEIGHTED AUG FOR REACH

------.--------------------------------------------

.47

-.81

-.22

FHF FOR THE REACH = 010 WITH 100.0 PERCENT OF THE REACH WITHIN .5 FEET
ZONE FOR THE REACH = A 2

--------------------------------------------------

------------- ---------.-- - -- ---
--------------------

/