Elevations of major floods along Pennsylvania rivers [microform]

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Author:

Title: Elevations of major floods along Pennsylvania rivers

Place of Publication: Harrisburg, Pa.

Copyright Date: 1942

Master Negative Storage Number: MNS# PSt SNPaAg084.6

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008 ENT 980325 TYP: s DT1: 1942 DT2: LAN

035 (OCoLC)38733414

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master)
245 00 Elevations of major floods along Pennsylvania rivers $cprepared in

cooperation with the United States Geological survey.
Harrisburg, Pa. $bCommonwealth of Pa., Dept. of Forests and Waters

$c1942.
28 p. $c23 cm.
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830 0 Pennsylvania agricultural literature on microfilm.

590

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COMMONWEALTH OF PENNSYLVANIA
DEPARTMENT OF FORESTS AND WATERS

G. ALBERT STEWART, St'cietary
CHARLES E. RYDER. Chief Engineer

ELEVATIONS OF MAJOR FLOODS

ALONG
PENNSYLVANIA RIVERS

1 !

Prepared iw CooperatJO!i With the
United States Geological Survey

John W. Mangan

nistrict Engineer

Harrisbutg;, Peiiiisylvania

1942

10

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CONTENTS

Page
Introduction 5-6

Source of Data. 4 6-7

Elevations of Vajor Floods

Delaware River Basin

Delaware River 9-11

Lackawaxen R1 ver 12

Leln1t?-h River K-^M

Schuylkill River 15

Susquehanna River Basin

North Branch of Susquehanna River 17

Susquehanna River 18

Lackawanna River 19

West Branch of Su.^quehanna River 20

Juniata Rlivcr an>l tributaries 21

Ohio River Basin

Allegheny River 23

Ohio River 24

Kisklminltas River and tributaries 25

Mononp;ahela River 26

Youphlop-heny River 27

Beaver <'md ShencUigo iUvers 28

Q r- rr. o :•; i-

(3)

'

i

ELEVATIONS OF MAJOR FLOODS

ALONG
PENNSYLVANIA RIVERS

There Is no factor In the study of floods that is of more impor-
tance than the ei^ atlon or altitude which the water surface attained.
It Is a direct index to the extent of damage and, except where affected
by backwater from Ice or discharge from a tributary stream, It Is an
essential factor In the determination of discharge at various places in

a river.

For several years the Pennsylvania Department of Forests and Waters
and the United States Geological Survey have been collecting records of
flood elevations alonp Pennsylvania rivers. These records, supplement-
ed by authentic data supplied by other agencies, are given In the
accompanying tables.

It should be borne In mind that there Is always some doubt as to
the accuracy of the ear]y flood helcrhts. In later years, particularly
since the turn of the century, gages were established on most of our
Imiportant rivers where dally readings were obtained with more frequent
observations at times of floods. Today, all principal river stations
are equipped with water-stage recorders that furnish continuous records
of river heights and eliminate all uncertainty and questionable ac-
curacy. .

From the greater nimiber of flood heights listed for tlie more re-
cent years, orie might mistakenly Infer that floods have been Increasing
in number if not In magnitude, particularly since the latter part of the
19th century. There Is no evidence that floods occurred less frequently
In the ec'trller part of the period covered by the record. A more logical

(^;

explanation of the predominance of records In recent years Is that, In
the earlier period, the frreatest floods made a more lasting Impression
and consequently the records have been preserved; whereas those of less-
er sla:nlflcance were lost In the Intervening; years.

River distances In miles are given in the tables for all locations
Ir. order that crest elevations may be Interpolated for Intervening
points. Flood profiles may also be developed from the data If desired.

Tlie crest heights are shown as elevations In feet above mean sea
■^evel, naridy lk)ok Datum. The elevations are based on the latest In-
formation available as to the results of adjustments to the precise
level nets. All elevations in any on« column wpre takpn cm the same
structure or group of structures.

At locations where river rages have been maintained, the zero of
the gage and the flood stage are given where this Information is known.

Flood-height tables for the floods of March 1936 covering all
major streams in the Pusquehanna and Ohio River Basins are given Ir. far
more detail in tl^e special state publication, "The Floods of March 1936
in Pennsylvania." Tlie United i^tates Engineer Offices have also develop-
ed flood profiles of some of the major floods in their respective dis-
tricts.

SOURCES OF DATA

nie Water Supply Commission of Pennsylvania made an exhaustive
study of historic floods In Pennsylvania and published the results of
their work In Part VIII of the Water Resources Inventory Report in 1914.
Many of the flood heights of the earlier floods given In that publica-
tion were converted into elevations above mean sea level for use in

this report.

It has been the custom of many people living In areas periodically
Inundated by floods to carefully mark the crest heights at locations
where the crests of previous floods were identified. After the disas-
trous floods of March 1936, this office collected data for the develop-

r

4

'.^

ment of elaborate profiles of this flood. At that time, the crest
heights of previous floods that have been carefully preserved were
obtained. Many of the tabulated elevations were derived from these
sources.

The United States Engineer Offices of Baltimore, Philadelphia,
Wllkes-Barre, and Pittsburgh, and the United States Weather Bureau have
aided the United States Geological Survey and the Pennsylvania Depart-
ment of Forests and Waters In the preparation of the tabulations by
furnishing many flood elevations obtained in their respective districts.

There is doubtless considerably more information on flood eleva-
tions In possession of other federal, state, municipal, and private
agencies. As fauch data are made known and authenticated, they may very
desirably be Included In future revisions of this compilation.

July 1942

(6)

(7)

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ELEVATIONS OF MAJOR FLOODS
DELAWARE RIVER BASIN

Lackftwaxen River
Dyberry Creek

Miles
from

Mouth

Location

March
1936

Sept.
1938

May
1942

Lackavmxen River

0.0

Mouth; Junction with Delaware River

4.2

Rowlands; highway bridge

695.5

13.4

p. p. & L. Co.; hydro-electric plant

828.8

824.4

841.2

16.0

Rowley; recorder gage

882.6

876.6

888.9

16.2

Hflwley; highway bridge; Welwood St.

887.8

893.2

16. V

Mouth of Middle Creek

900.5

17.2

... ^ ^ . .-i — ni^^^^AAQ Bridse

900.8

B9R.0 1

907.9

1

20.7

'Ahlta Mills; highway bridge

932.1

24.59

Mouth of Carley Brook

960.2

956.4

25.10

Honesdale; Florence Mills

964.6

972.3

25,35

Honesdale; Fourth St.

970.0

965.4

974.8

,

25.52

Honeadale; Sixth St.

970.8

966.0

977.6

25.63

Honepdfile; Eighth St.

972.3

968. b

979.4

<4'

25.78

Honesdale; Court House

972.5

979.6

25.95

Junction with Dyberry Creek

26.08

Honesdale; Court St. footbridge

977.4

974.0

1

982.7

26.19

Hone sdB ie ; Mn in St ,

984.3

26.46

Honesdale; School

982.6

988.1

26.95

Honesdale; Clark St.

994.4

990.9

999.8

27 .25

1,003.9

1,007.8

Dyberry Creek

n.OO

Junction with Lackawaxen River

.04

Hort^sdple; highway bri dge

977.1

971.4

984.1

.31

Honesdale; Fifteenth St.

978.4

984.5

.58

Honesdale; Eighteenth St.

978.6

974.1

985.2

.73

Honesdale; Stanton St.

979.6

985.8

.88

PenriR. Dept . of Highways abed

979.5

974.7

985.9

'

1.83

■

986.6

2.08

Highway bridge

979.5

975.0

986.8

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36.1
36.5

Location

1,'arch
1940
(feet)

l^outh

Duryea, Stevenson St. Bridge (D.S.)

Old Forge (gage); 150 feet above D.L.W.R.R. bridge

V.ooslc (gage); River St. Bridge

Scranton; Carbon (Olive) St. Bridge; Old U.S.W.B.gage

Scranton; Mbri ffht St. Bridge; newU.SJ.V.B. gage

Olyphant (gage); V/est Lackawanna Street Bridge

Ai-cuoMla (gage), ^.alf "ilo above mouth of White Oak Run

Carbondala; D 5c H R.R. Station

Forest City (gage); 4.8 miles above mouth of Elk Creek

Forest City (gage); dam of Scranton-Sprlng Brook 'Vater Co.

606.94

694.75
766.61

arte kt

1,429.02

Note.- Flood of I'erch 1936 reached an elevation of 765.31 feet at Olyphant.

^:ay
1942
(feet)

565.21
610.79

632.06
693.05

69V. 35
768.38

PQQ Q7

1,046.70
1,4:^^.54
1,472.41

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