Rates of erosion (cm per year)

Table 2. Migration rates of knickpoints in streams studied in the Finger Lakes Region, grouped by position with regard to lithology.

Stream^a	Rates of migration (mm per year)^b		Catchment Area (km²)
	t₀ = 14 ka	t₀ = 16 ka
Dg
Rock	7	6	18
Hector	8	7	31
Inwood Point #1	9	8	2
Glenwood	17	15	3
Inwood Point #2	19	17	2
Excelsior	49	43	3
Taughannock	113	99	43
Plum Point	114	100	8
Dhl
Big Hollow	50	44	1
Little	88	77	4
Paines	147	128	36
Dhu
Atwater #1	30	26	7
Groves	50	43	5
Sampson	70	61	7
Powell	108	95	6
Kashong	163	143	70
Ds
Eggleston	97	85	7
Dt
Willow	41	36	9
Atwater #2	85	74	6
Mill	146	138	17

^{aStreams are grouped according to lithology. Dg: Genesee Group; Dhl, Dhu: Hamilton Group; Ds: Sonyea Group; Dt: Tully Limestone.
^{bRates are determined for two initial starting times, depending on the timing of glacial retreat.

Table 3. Migration rates of knickpoints in streams studied in the Finger Lakes Region, grouped by geographic position with regard to topography.}

Stream^a

Rates of migration
(mm per year)^b

Catchment Area (km²)

Lithology at Knickpoint

t₀ = 14 ka

t₀ = 16 ka

Southern

Inwood Point #1

9

8

2

Dg

Inwood Point #2

19

17

2

Dg

Excelsior

49

43

3

Dg

Glenwood

17

15

3

Dg

Eggleston

97

85

7

Ds

Willow

41

36

9

Dt

Rock

7

6

18

Dg

Hector

8

7

31

Dg

Taughannock

113

99

43

Dg

Midlake

Atwater #2

85

74

6

Dt

Atwater #1

30

26

7

Dhu

Plum Point

114

100

8

Dg

Mill

146

128

17

Dt

Northern

Big Hollow

50

44

1

Dhl

Little

88

77

4

Dhl

Groves

50

44

5

Dhu

Powell

108

95

6

Dhu

Sampson

70

61

7

Dhu

Paines

147

128

36

Dhl

Kashong

163

143

70

Dhu

^{aStreams are grouped according to topography (see Figures 1 and 12), and then by catchment size.
^{bRates are determined for two initial starting times, depending on the timing of glacial retreat, the same values as in Table 2.}}}