WSP03177

• File Number: 8147
• Description: Gunnison-Arkansas Project
• State: CO
• Water Division: 4
• Date: 6/1/1948
• Author: US DoI BoR
• Title: Interim Report Gunnison-Arkansas Project Colorado Appendix G Flood Control
• Water Supply Pro - Doc Type: Report/Study

188:5

-.;

(-Hi-sto ricnl-floods)--

bursts \71th heavy rain ovur a eontributingdrninage nron of nb~ut 1,740
squnro milos botrroon Canon City and Puoblo. Tho progross of tho flood
crost thr~ugh the Arknnsas Valloy is shorm in tablo 1.

Tnble l.--Progross of Juno 1921 flood
through tho Arknnsas Valley

Point :Dist. betrreen:
of , points :
obsorvntion:(rlver o110s):

Approxinnte
tino of orost

c::.:

Cnnon City I 0 8:00 PMi June 3:
Fleronoo 8 I 8:30 PM, " ":
Pueblo 35 Llidnlght
Linnznnola 52 : 9:30 lI1li June 1:
Recky Ford 10 _., ;1].:30 1\11, " ",
La Junta~I=---13~--..=c.'~3fOOcPl;j;- -" ":
Fert Ly~n, ~:- _-..28 _ ,_~Fll,IOO',P1l,.". ."- 11":
IId.of Anity~~--- _ _
Cnnnl.___~:;':_ _ _ 23__ _: 4:3a.m; "II 5:
.Source:" Ilntor SU~'-ply-Paper"487i p. 8.

-
IRato of Orost : Durati on
:progress: florr :01' orest
,(ni./hr.):(sec,-ft.): flow

....

3;740 . ....
.
9;000 . ....
.
103,000 6 nino
... ... .

16.0
10.0
5.5
5.0
3.7
3.5.

:. ... e. -s:..::....=.....:... .~.:
. : _200-;~000=~:~45=hin.

-. 185,000::-:_ _' .. ~ -,
- '.-=-I=O=:o-,,--~':'
170iOOO-:;=~~3tr5' ...

4.2

.

The June 1921 flood in tho Arknnsas Valley wns augoontod by inflow
fron sovornl tributarios bolew Puoblo. Ponks of tho najor inflorts aro
sho\7U in table 2.

Tablo 2....Tributnry inflow
of Juno 1921 flood

Tributnry
Fountain Croek
Snlt Croek
St, Charles Rivor :
Chico Creek

Poak flow
34,000
32;100
n,800
28,600

I Tine crest ronchod
I Arknns~,s Rivor
I 3:00 AM, Juno 4
2:00 AMi " "
1:00 /Il.!. II "
4:00 AI1, " "

Hoavy rains on Juno 2 nnd 3 in thc rogion frost of Puoblo rosulted
in sovernl successivo rises in tho river. The flood on Dry Creek cnusod
tho first rise in the Arkr~sns Rivor nt Pueblo. By" 2:00 A~d., Juno"3, a
stnge of 13.7 feot, oquivr,lent to n dischnrge of 28,000 sooond-foot, had
been ronched on tho Stnto gn~e i~edintely bolorr tho Ilnin Stroot bridgo.
This riso subsided in n- fovt hours, 'nnd ns tho rivor ch,\Onol could cnrry
n disc~arge of up to 40,000 socond-feet, there .ms littlo d~~nge. Tho
intenso rain that bogan on tho aftornoon of tho 3rd causod tho rivor to
--.- ____r:iso_rnpidly_nt_5:,QO_P .U~. -By--8:45-P-.H-.,tho--1OViiCSftero overtopped nnd

2