U.S. Geological Survey, Water Resources of Pennsylvania

Peak Stage and Flows as a Result of Tropical Storm Ivan

Delaware River Basin (back to basins)

USGS Pennsylvania Water Science Center FLOOD PEAK SUMMARY

Tropical Storm Ivan – September 17 to 21, 2004

USGS Station Number

Stream Name

Stream Location

Drainage area

(square miles)

Period of known floods

Maximum flood previously known

Provisional Maximum during present flood

Date

Stage (feet)

Discharge (cubic feet per second)

Date

Stage (feet)

Discharge

Discharge (cubic feet per second)

Unit Discharge (cubic feet per second per square mile)

Recurrence interval range (years) #

01428750

W. Branch Lackawaxen River

Aldenville

40.6

1986 to present

1/19/96

8.00

4,340

9/18/04

7.05

2980

73.4

<10

01429000

W. Branch Lackawaxen River

Prompton

59.7

1944 to present

8/18/55+

9.24+

5,860+

9/18/04

5.82

2,560

42.9

<10

01429300

Dyberry Creek

Near Honesdale

45.8

1975 to present

9/27/85

11.75

5,140

9/18/04

12.73

7,060

154

100<500

01429500

Dyberry Creek

Honesdale

64.6

1943 to present

7/10/52+

14.60+

15,500+

9/18/04

7.44

2,750

42.6

>500

01430000

Lackawaxen River

Honesdale

164

1948-69, 1985 to present

8/18/55+

15.52+

18,600+

9/18/04

10.54

10,100

61.6

>500

01431500

Lackawaxen River

Hawley

290

1908-17, 1938 to present

8/19/55+

24.80+

51,900+

9/18/04

14.49

17,700

61.0

50>100

01438300

Vandermark Creek

Milford

5.36

1962 to present

9/16/99

3.36a

566

9/18/04

3.16

431

80.4

25<50

01439500

Bush Kill

Shoemakers

117

1908 to present

8/19/55

13.95

23,400

9/18/04

7.27

5,330

45.6

10<25

01440300

Mill Creek

Mountain-home

5.84

1961 to present

7/28/69

12.65

1,650

9/18/04

10.87

789

135

<10

01440400

Brodhead Creek

Analomink

65.9

1957 to present

7/28/69

11.82

12,900

9/18/04

8.53

5,720

86.8

<10

01440485

Swiftwater Creek

Swiftwater

6.59

2001 to present

9/23/03

3.49

996

9/18/04

4.57

2,340

355

Not determined

01441495

Pocono Creek

Stroudsburg

38.9

2002 to present

9/23/03

11.87

3,540

9/18/04

12.04

4,110

106

Not determined

01442500

Brodhead Creek

Minisink Hills

259

1950 to present

8/19/55

27.00

68,800

9/18/04

18.23 1 11.66

18,500

71.4

<10

01447500

Lehigh River

Stoddartsville

91.7

1943 to present

8/19/55

16.37

31,900

9/18/04

11.59

10,200

111

10>25

01447680

Tunkhannock Creek

Long Pond

20.0

1965 to present

4/6/84

4.76

679

9/18/04

4.81

769

38.4

25>50

01447720

Tobyhanna Creek

Blakeslee

118

1961 to present

9/27/85

12.33

9,190

9/18/04

12.71

10,400

88.1

25>50

01447800

Lehigh River

White Haven

290

1957 to present

12/21/57

9.85+

13,800+

9/19/04

7.49

7,160

24.7

<10

01449000

Lehigh River

Lehighton

591

1982 to present

1/27/96

12.55

22,900

9/18/04

12.01

21,200

35.9

<10

01449360

Pohopoco Creek

Kresgeville

49.9

1966 to present

7/29/69

9.21

2,080

9/18/04

8.99

1,950

39.1

10>25

01449800

Pohopoco Creek

Parryville

96.4

1967 to present

6/22/03

5.99

1,740b

9/19/04

5.72

1,570

16.3

<10

01450500

Aquashicola Creek

Palmerton

76.7

1939 to present

7/10/45

13.63

11,700

9/18/04

12.17

8,940

117

25>50

01451000

Lehigh River

Walnutport

889

1946 to present

8/19/55

17.68

77,800

9/18/04

12.30

40,000

45.0

10>25

01451192

Lehigh River

Allentown

1,033

1985 to present

9/9/87

46.89

43,200

9/18/04

49.35

53,000

51.3

Not determined

01451500

Little Lehigh Creek

Allentown

80.8

1945 to present

6/22/72

11.80

11,800

9/18/04

10.63

9,670

120

25>50

01451650

Little Lehigh Creek

10 th Street Allentown

98.2

1986 to present

9/9/87

9.47

7,370

9/18/04

10.65

9,680

98.6

25>50

01451800

Jordan Creek

Schnecksville

53.0

1966 to present

6/22/72

12.32

7,100

9/18/04

9.46

4,160

78.5

<10

01452000

Jordan Creek

Allentown

75.8

1944 to present

6/23/72

11.61

16,200

9/18/04

7.90

7440

98

10>25

01452500

Monocacy Creek

Bethlehem

44.5

1948 to present

1/25/79

8.19

3,490

9/18/04

9.85

5,470

123

100<500

01453000

Lehigh River

Bethlehem

1,279

1902-05;

1909 to present

5/23/42

25.90

92,000

9/18/04

19.70

56,700

44.3

25<50

01454700

Lehigh River

Glendon

1,359

1966 to present

6/23/72

24.86

60,600

9/19/04

26.60 1

60,000 e

44.2

25>50

01459500

Tohickon Creek

Pipersville

97.4

1935 to present

9/16/99

11.90

18,600

9/18/04

9.22

8,740

89.7

<10

01464645

North Br. Neshaminy Creek

New Britain

16.2

1985 to present

9/16/99

4.96

2,340

9/18/04

2.90

225

13.9

Not determined

01464720

North Br. Neshaminy Creek

Chalfont

31.5

1990 to present

9/16/99

11.36

6,990

9/18/04

6.48

1,390

44.1

Not determined

01464750

Neshaminy Creek

Rushland

91.0

1986-92; 2001 to present

9/20/89

12.33

5,300

9/18/04

8.20

2,740

30.1

Not determined

01464907

Little Neshaminy Creek

Neshaminy

26.8

1998 to present

6/16/01

14.57

11,300

9/18/04

5.44

1,270

47.4

Not determined

01465500

Neshaminy Creek

Langhorne

210

1934 to present

8/19/55

22.84

49,300

9/18/04

6.54

3,980

19.0

<10

01465798

Poquessing Creek

Philadelphia

21.4

1965 to present

6/28/82

15.35

9,400

9/18/04

4.31

205

9.58

<10

01467048

Pennypack Creek

Philadelphia

49.8

1965 to present

9/16/99

14.77

12,400

9/18/04

4.38

666

13.4

<10

01467087

Frankford Creek

Philadelphia

30.4

1982 to present

7/31/85

11.82

10,300

9/18/04

4.63

1,650

54.3

<10

01468500

Schuylkill River

Landingville

133

1947-53; 1963-65; 1973 to present

6/22/72

17.36

14,000

9/18/04

13.85

6,000

45.1

<10*

01469500

Little Schuylkill River

Tamaqua

42.9

1919 to present

8/18/55

11.10

7,790

9/18/04

6.78

2,370

55.2

<10

01470500

Schuylkill River

Berne

355

1947 to present

6/22/72

19.00

42,800

9/18/04

15.05

24,900

70.1

10>25

01470779

Tulpehocken Creek

Bernville

66.5

1974 to present

1/24/79

10.16

7,140

9/18/04

7.52

2,150

32.3

<10

01470853

Furnace Creek

Robesonia

4.2

1982 to present

12/17/00

4.66

718

9/18/04

1.09

30

7.14

<10

01470960

Tulpehocken Creek

Blue Marsh / Reading

175

1965 to present

6/22/72+

18.70+

16,100+

9/19/04

6.09

2,100

12.0

<10

01471000

Tulpehocken Creek

Reading

211

1950 to present

6/23/72+

15.65+

17,000+

9/18/04

4.16

2,250

10.7

<10

01471510

Schuylkill River

Reading

880

1919-30; 1977 to present

9/2/1850

unknown

80,000

9/18/04

16.24

29,700

33.8

<10

01471660

Schuylkill River

Birdsboro

976

1983 to present

4/16/83

158.72

30,700

9/19/04

157.49

27,600

28.3

Not determined

01471875

Manatawny Creek

Spangsville

56.9

1993 to present

1/19/96

8.11

3,380

9/18/04

7.50

2,710

47.6

Not determined

01471980

Manatawny Creek

Pottstown

85.5

1974 to present

9/9/87

11.46

7,750

9/18/04

7.41

3,070

35.9

<10

01472000

Schuylkill River

Pottstown

1,147

1927 to present

6/2372

29.97

95,900

9/19/04

14.59

27,800

24.2

<10

01472157

French Creek

Phoenixville

59.1

1968 to present

6/22/72

13.66

11,200

9/18/04

9.51

3,360

56.9

<10

01472162

Schuylkill River

Phoenixville

1,280

1971 to present

6/23/72

100.58

79,100

9/19/04

87.99

35,590

27.8

Not determined

01472198

Perkiomen Creek

East Greenville

38.0

1981 to present

6/25/84

7.26

6,740

9/18/04

7.07

5,720

150

10<25

01472199

West Br. Perkiomen Creek

Hillegass

23.0

1981 to present

1/19/96

6.34

3,270

9/18/04

5.76

2,420

105

<10

01472620

East Br. Perkiomen Creek

Dublin

4.0

1983 to present

9/16/99

8.57

1,860

9/18/04

6.08
6.49

964

241

<10

01472810

East Br. Perkiomen Creek

Schwenksville

58.7

1991 to present

9/16/99

14.03

12,300

9/18/04

10.35

6,590

112

Not determined

01473000

Perkiomen Creek

Graterford

279

1914 to present

7/09/35

18.26

39,900

9/18/04

14.80

26,500

95.0

<10

01473169

Valley Creek

Valley Forge

20.8

1982 to present

9/16/99

14.75

6,280

9/18/04

8.64

1,580

76.0

<10

01473500

Schuylkill River

Norristown

1,760

1927-33; 1983-93; 2001 to present

12/14/83

62.94

42,700

9/18/04

16.00

54,300

30.9

Not determined

01473900

Wissahickon Creek

Fort Washington

40.8

1961-69; 2000 to present

9/16/99

18.05

14,300e

9/18/04

8.64

2,410

59.1

Not determined

01474000

Wissahickon Creek

Philadelphia

64.0

1897-03; 1965 to present

9/16/99

11.50

19,800

9/18/04

4.84

2,240

35.0

<10

01474500

Schuylkill River

Philadelphia

1,893

1931 to present

10/04/1869

17.0

135,000e

9/18/04

11.33

51,100

27.0

<10

01475530

Cobbs Creek

Philadelphia

4.78

1964-81, 2004 to present

8/23/74

10.48

3,480

9/18/04

6.66

482

101

<10

01475850

Crum Creek

Newtown Square

15.8

1981 to present

9/16/99

11.99

4,250

9/18/04

8.38

1,660

105

<10

01476480

Ridley Creek

Media

30.5

1986 to present

9/16/99

15.10

8,000

9/18/04

7.28

1,650

54.1

<10

01477000

Chester Creek

Chester

61.1

1931 to present

9/13/71

24.59

21,000

9/18/04

8.58

2,650

43.4

<10

01478245

White Clay Creek

Strickersvill e

59.2

1996 to present

9/16/99

16.71

14,400

9/18/04

9.73

3,620

61.1

Not determined

01479820

Red Clay Creek

Kennett Square

28.3

1988 to present

9/15/03

15.30

19,700

9/18/04

6.55

1,750

61.8

Not determined

01480300

West Br. Brandywine Creek

Honey Brook

18.7

1960 to present

1/19/96

11.62

3,800

9/18/04

8.01

1,610

86.1

<10

01480400

Birch Run

Wagontown

4.55

1995 to present

1/19/96

4.99

401

9/18/04

3.13

65

14.3

Not determined

01480500

West Br. Brandywine Creek

Coatesville

45.8

1942-51, 1970 to present

8/09/42

12.30

8,600

9/18/04

6.24

1,460

31.9

<10

01480617

West Br. Brandywine Creek

Modena

55.0

1970 to present

6/29/73

12.47

9,600

9/18/04

6.48

1,700

30.9

<10

01480675

Marsh Creek

Glenmoore

8.57

1966 to present

6/22/72

4.68

946

9/18/04

2.55

207

24.2

<10

01480685

Marsh Creek

Downingtown

20.3

1973 to present

6/18/82

3.89

692

9/19/04

2.56

99

4.88

Not determined

01480700

East Br. Brandywine Creek

Near Downingtown

60.6

1965 to present

6/22/72

12.06

8,070

9/18/04

6.39

2,340

38.6

<10

01480870

East Br. Brandywine Creek

Below Downingtown

89.9

1972 to present

6/22/72

12.40

8,160

9/18/04

10.11

3,820

42.5

<10

01481000

Brandywine Creek

Chadds Ford

287

1911-53, 1962 to present

9/17/99

17.15

26,900

9/19/04

9.86

7,370

25.7

<10

e – Discharge is an estimate

+ - Prior to regulation

1 – The maximum stage occurred on September 19 as a result of backwater from the Delaware River.

# - Based on recurrence intervals computed from streamflow-gaging-station data found in Table 4 and Appendix 2 from U.S. Geological Survey Water-Resources Investigations Report 00-4189 Techniques for estimating magnitude and frequency of peak flows for Pennsylvania streams  (PDF File).

* - Based on recurrence intervals computed from streamflow-gaging-station data found in Appendix 2 from U.S. Geological Survey Water-Resources Investigations Report 99-4068 Comparison of methods for computing streamflow statistics for Pennsylvania streams (PDF File).

a – Peak gage height for period of record is 3.65 ft, Sept.25, 1975.

b – Also May 8, 1973.