Station Overview Station Location
Station Number NY-SN-6 Latitude 42.584421
Station Name Interlaken 2.4 S Longitude -76.723225
County Seneca Elevation (ft) 1142



Month 30 Yr Avg by PRISM Total Prcp Sum Days Covered By All Observations Daily Prcp Sum Daily Observation Count Multiday Prcp Sum Days Covered by Multiday Observations Multiday Observation Count Days With Prcp Days With Trace Total Snowfall Days With Snowfall Days With Snow On Ground
Oct 09 3.39 1.93 27 1.93 27 0.00 0 0 15 5 3.8 1 0
Nov 09 3.05 1.45 29 1.45 29 0.00 0 0 13 6 0.0 0 0
Dec 09 2.43 1.46 18 1.01 12 0.45 6 2 9 1 6.0 5 0
Jan 10 2.12 1.14 6 0.00 1 1.14 5 2 0 1 0.0 0 0
Feb 10 1.86 0.34 4 0.01 2 0.33 2 1 1 0 0.2 1 0
March 10 2.72 0.17 3 0.17 3 0.00 0 0 2 1 0.0 0 0
April 10 3.17 2.21 26 0.97 23 1.24 3 1 4 4 0.0 0 0
May 10 3.10 2.93 31 1.62 24 1.31 7 3 4 2 0.0 0 0
June 10 3.81 3.98 30 3.83 28 0.15 2 1 17 1 0.0 0 0
July 10 3.78 3.75 31 3.75 31 0.00 0 0 10 3 0.0 0 0
Aug 10 3.40 6.15 23 1.63 18 4.52 5 2 9 1 0.0 0 0
Sept 10 3.62 0.28 8 0.28 8 0.00 0 0 3 3 0.0 0 0
Water Year Totals: 36.45" 25.79" 236 days 16.65" 206 9.14" 30 days 12 87 days 28 days 10.0" 7 days 0 days



Days in Water Year Cell Color Key
        Daily Observation with Prcp         Missing Day
        Multiday Observation         Daily/Multiday Observation Conflict

Day of Year Daily Prcp Multiday Prcp
10/1/2009 0.05
10/2/2009 T
10/3/2009 0.24
10/4/2009 0.00
10/5/2009 0.01
10/6/2009 0.06
10/7/2009 0.08
10/8/2009 0.02
10/9/2009 T
10/10/2009 0.26
10/11/2009 0.03
10/12/2009 T
10/13/2009 0.09
10/14/2009 0.09
10/15/2009 0.00
10/16/2009 0.40
10/17/2009 T
10/18/2009 0.00
10/19/2009 0.00
10/20/2009 0.00
10/21/2009
10/22/2009
10/23/2009 0.10
10/24/2009 0.14
10/25/2009 0.35
10/26/2009 0.00
10/27/2009 0.00
10/28/2009
10/29/2009
10/30/2009 0.01
10/31/2009 T
11/1/2009 0.05
11/2/2009 0.00
11/3/2009 0.06
11/4/2009 0.05
11/5/2009 T
11/6/2009 0.13
11/7/2009 0.00
11/8/2009 0.00
11/9/2009 0.00
11/10/2009 0.00
11/11/2009 0.00
11/12/2009 T
11/13/2009 0.00
11/14/2009 0.02
11/15/2009 T
11/16/2009 0.01
11/17/2009 0.00
11/18/2009 0.00
11/19/2009 0.00
11/20/2009 0.34
11/21/2009
11/22/2009 0.01
11/23/2009 T
11/24/2009 0.02
11/25/2009 0.02
11/26/2009 T
11/27/2009 0.41
11/28/2009 0.04
11/29/2009 T
11/30/2009 0.29
12/1/2009 0.02
12/2/2009 0.00
12/3/2009 0.23
12/4/2009 0.03
12/5/2009
12/6/2009 0.01
12/7/2009 0.00
12/8/2009
12/9/2009 0.25
12/10/2009
12/11/2009
12/12/2009
12/13/2009 T
12/14/2009 0.27
12/15/2009
12/16/2009 0.17
12/17/2009 0.02
12/18/2009 0.01
12/19/2009
12/20/2009
12/21/2009
12/22/2009
12/23/2009
12/24/2009
12/25/2009
12/26/2009 **
12/27/2009 0.40
12/28/2009 **
12/29/2009 **
12/30/2009 0.05
12/31/2009 **
Day of YearDaily PrcpMultiday Prcp
1/1/2010 **
1/2/2010 0.16
1/3/2010
1/4/2010
1/5/2010
1/6/2010
1/7/2010
1/8/2010
1/9/2010
1/10/2010
1/11/2010
1/12/2010
1/13/2010
1/14/2010
1/15/2010
1/16/2010
1/17/2010
1/18/2010
1/19/2010
1/20/2010
1/21/2010
1/22/2010
1/23/2010
1/24/2010 **
1/25/2010 **
1/26/2010 0.98
1/27/2010 T
1/28/2010
1/29/2010
1/30/2010
1/31/2010
2/1/2010
2/2/2010
2/3/2010
2/4/2010
2/5/2010
2/6/2010
2/7/2010
2/8/2010
2/9/2010
2/10/2010 **
2/11/2010 0.33
2/12/2010 0.00
2/13/2010
2/14/2010
2/15/2010
2/16/2010
2/17/2010 0.01
2/18/2010
2/19/2010
2/20/2010
2/21/2010
2/22/2010
2/23/2010
2/24/2010
2/25/2010
2/26/2010
2/27/2010
2/28/2010
3/1/2010
3/2/2010
3/3/2010
3/4/2010
3/5/2010
3/6/2010
3/7/2010
3/8/2010
3/9/2010
3/10/2010
3/11/2010
3/12/2010
3/13/2010
3/14/2010
3/15/2010
3/16/2010
3/17/2010
3/18/2010
3/19/2010
3/20/2010
3/21/2010
3/22/2010
3/23/2010
3/24/2010
3/25/2010
3/26/2010
3/27/2010
3/28/2010
3/29/2010 0.06
3/30/2010 T
3/31/2010 0.11
Day of YearDaily PrcpMultiday Prcp
4/1/2010 0.00
4/2/2010 0.00
4/3/2010 0.00
4/4/2010 0.00
4/5/2010 0.00
4/6/2010 T
4/7/2010 0.13
4/8/2010 T
4/9/2010 0.30
4/10/2010 T
4/11/2010 0.00
4/12/2010 0.00
4/13/2010 0.00
4/14/2010 0.00
4/15/2010 0.00
4/16/2010
4/17/2010 0.44
4/18/2010 0.10
4/19/2010 0.00
4/20/2010 0.00
4/21/2010 0.00
4/22/2010
4/23/2010
4/24/2010
4/25/2010 **
4/26/2010 **
4/27/2010 1.24
4/28/2010 T
4/29/2010 0.00
4/30/2010 0.00
5/1/2010 0.00
5/2/2010 0.00
5/3/2010 0.00
5/4/2010 0.64
5/5/2010 0.01
5/6/2010 0.54
5/7/2010 0.00
5/8/2010 **
5/9/2010 **
5/10/2010 0.54
5/11/2010 0.00
5/12/2010 **
5/13/2010 0.59
5/14/2010 0.43
5/15/2010 T
5/16/2010 0.00
5/17/2010 0.00
5/18/2010 **
5/19/2010 0.18
5/20/2010 0.00
5/21/2010 0.00
5/22/2010 0.00
5/23/2010 0.00
5/24/2010 0.00
5/25/2010 0.00
5/26/2010 0.00
5/27/2010 0.00
5/28/2010 0.00
5/29/2010 T
5/30/2010 0.00
5/31/2010 0.00
6/1/2010 **
6/2/2010 0.15
6/3/2010 0.84
6/4/2010 0.14
6/5/2010 0.26
6/6/2010 0.82
6/7/2010 0.19
6/8/2010 0.00
6/9/2010 T
6/10/2010 0.50
6/11/2010 0.01
6/12/2010 0.02
6/13/2010 0.11
6/14/2010 0.02
6/15/2010 0.01
6/16/2010 0.00
6/17/2010 0.13
6/18/2010 0.02
6/19/2010 0.00
6/20/2010 0.00
6/21/2010 0.00
6/22/2010 0.00
6/23/2010 0.02
6/24/2010 0.07
6/25/2010 0.00
6/26/2010 0.00
6/27/2010 0.00
6/28/2010 0.30
6/29/2010 0.37
6/30/2010 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2010 0.00
7/2/2010 0.00
7/3/2010 0.00
7/4/2010 0.00
7/5/2010 0.00
7/6/2010 0.00
7/7/2010 0.00
7/8/2010 0.00
7/9/2010 0.00
7/10/2010 1.32
7/11/2010 0.00
7/12/2010 0.00
7/13/2010 0.01
7/14/2010 T
7/15/2010 0.00
7/16/2010 T
7/17/2010 T
7/18/2010 0.04
7/19/2010 0.00
7/20/2010 0.08
7/21/2010 0.00
7/22/2010 0.48
7/23/2010 0.73
7/24/2010 0.34
7/25/2010 0.48
7/26/2010 0.04
7/27/2010 0.00
7/28/2010 0.00
7/29/2010 0.23
7/30/2010 0.00
7/31/2010 0.00
8/1/2010 0.02
8/2/2010 0.08
8/3/2010 0.00
8/4/2010 0.00
8/5/2010 0.00
8/6/2010 0.66
8/7/2010
8/8/2010
8/9/2010
8/10/2010 0.46
8/11/2010 0.01
8/12/2010 T
8/13/2010 0.05
8/14/2010 0.00
8/15/2010
8/16/2010 0.26
8/17/2010 0.00
8/18/2010
8/19/2010 0.06
8/20/2010
8/21/2010
8/22/2010 **
8/23/2010 4.29
8/24/2010 **
8/25/2010 0.03 **
8/26/2010 0.23
8/27/2010
8/28/2010 0.00
8/29/2010
8/30/2010 0.00
8/31/2010 0.00
9/1/2010 0.00
9/2/2010 0.00
9/3/2010 T
9/4/2010 T
9/5/2010 0.04
9/6/2010
9/7/2010 T
9/8/2010 0.22
9/9/2010 0.02
9/10/2010
9/11/2010
9/12/2010
9/13/2010
9/14/2010
9/15/2010
9/16/2010
9/17/2010
9/18/2010
9/19/2010
9/20/2010
9/21/2010
9/22/2010
9/23/2010
9/24/2010
9/25/2010
9/26/2010
9/27/2010
9/28/2010
9/29/2010
9/30/2010



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2009 7:00 AM 0.05 M M M M
10/2/2009 7:00 AM T M M M M
10/3/2009 7:00 AM 0.24 M M M M
10/4/2009 7:00 AM 0.00 0.0 M M M
10/5/2009 7:00 AM 0.01 M M M M
10/6/2009 7:00 AM 0.06 M M M M
10/7/2009 7:00 AM 0.08 M M M M
10/8/2009 7:00 AM 0.02 M M M M
10/9/2009 7:00 AM T M M M M
10/10/2009 7:00 AM 0.26 M M M M
10/11/2009 7:00 AM 0.03 M M M M
10/12/2009 7:00 AM T M M M M
10/13/2009 7:00 AM 0.09 M M M M
10/14/2009 7:00 AM 0.09 M M M M
10/15/2009 7:00 AM 0.00 0.0 M M M gauge had a layer of frost on it but nothing in the cylinder.
10/16/2009 7:00 AM 0.40 3.8 M M M
10/17/2009 7:00 AM T M M T M
10/18/2009 7:00 AM 0.00 0.0 M M M
10/19/2009 7:00 AM 0.00 0.0 M M M
10/20/2009 7:00 AM 0.00 0.0 M M M
10/23/2009 7:00 AM 0.10 M M M M
10/24/2009 7:00 AM 0.14 M M M M
10/25/2009 7:00 AM 0.35 M M M M
10/26/2009 7:00 AM 0.00 0.0 M M M
10/27/2009 7:00 AM 0.00 0.0 M M M
10/30/2009 7:00 AM 0.01 M M M M
10/31/2009 7:00 AM T M M M M
11/1/2009 7:00 AM 0.05 M M M M
11/2/2009 7:00 AM 0.00 0.0 M M M
11/3/2009 7:00 AM 0.06 M M M M
11/4/2009 7:00 AM 0.05 M M M M
11/5/2009 7:00 AM T M M M M
11/6/2009 7:00 AM 0.13 T M M M
11/7/2009 7:00 AM 0.00 0.0 M M M
11/8/2009 7:00 AM 0.00 0.0 M M M
11/9/2009 7:00 AM 0.00 0.0 M M M
11/10/2009 7:00 AM 0.00 0.0 M M M
11/11/2009 7:00 AM 0.00 0.0 M M M
11/12/2009 7:00 AM T M M M M heavy frost in am
11/13/2009 7:00 AM 0.00 0.0 M M M
11/14/2009 7:00 AM 0.02 M M M M
11/15/2009 7:00 AM T M M M M
11/16/2009 7:00 AM 0.01 M M M M light rain fell around 10:30 pm 11/15
11/17/2009 7:00 AM 0.00 0.0 M M M
11/18/2009 7:00 AM 0.00 0.0 M M M
11/19/2009 7:00 AM 0.00 0.0 M M M
11/20/2009 7:00 AM 0.34 M M M M
11/22/2009 7:00 AM 0.01 M M M M
11/23/2009 7:00 AM T M M M M
11/24/2009 7:00 AM 0.02 M M M M
11/25/2009 7:00 AM 0.02 M M M M
11/26/2009 7:00 AM T M M M M very light misty stuff fell in the afternoon
11/27/2009 7:00 AM 0.41 M M M M
11/28/2009 7:00 AM 0.04 M M M M
11/29/2009 7:00 AM T M M M M
11/30/2009 8:30 AM 0.29 M M M M
12/1/2009 7:00 AM 0.02 T T M M
12/2/2009 7:00 AM 0.00 0.0 M M M
12/3/2009 7:00 AM 0.23 M M M M
12/4/2009 7:00 AM 0.03 M M M M
12/6/2009 7:00 AM 0.01 0.1 0.01 M M 1/8" of snow or less
12/7/2009 7:00 AM 0.00 0.0 M M M
12/9/2009 7:00 AM 0.25 2.5 0.25 M M very windy today, snow heavy, wet
12/13/2009 7:00 AM T T M M M
12/14/2009 7:00 AM 0.27 M M M M
12/16/2009 7:00 AM 0.17 1.5 M M M
12/17/2009 9:00 AM 0.02 1.3 M M M light fluffy snow falling during collection
12/18/2009 7:00 AM 0.01 0.6 M M M
1/27/2010 7:00 AM T T M M M
2/12/2010 7:00 AM 0.00 0.0 M M M
2/17/2010 7:00 AM 0.01 0.2 M M M
3/29/2010 7:00 AM 0.06 M M M M
3/30/2010 7:00 AM T M M M M
3/31/2010 7:00 AM 0.11 M M M M
4/1/2010 7:00 AM 0.00 0.0 M M M
4/2/2010 7:00 AM 0.00 0.0 M M M
4/3/2010 7:00 AM 0.00 0.0 M M M
4/4/2010 7:00 AM 0.00 0.0 M M M
4/5/2010 7:00 AM 0.00 0.0 M M M
4/6/2010 7:00 AM T M M M M
4/7/2010 7:00 AM 0.13 M M M M
4/8/2010 7:00 AM T M M M M
4/9/2010 7:00 AM 0.30 M M M M
4/10/2010 7:00 AM T M M M M
4/11/2010 7:00 AM 0.00 0.0 M M M
4/12/2010 7:00 AM 0.00 0.0 M M M
4/13/2010 7:00 AM 0.00 0.0 M M M
4/14/2010 7:00 AM 0.00 0.0 M M M
4/15/2010 7:00 AM 0.00 0.0 M M M
4/17/2010 7:00 AM 0.44 M M M M
4/18/2010 7:00 AM 0.10 M M M M
4/19/2010 7:00 AM 0.00 0.0 M M M
4/20/2010 7:00 AM 0.00 0.0 M M M
4/21/2010 7:00 AM 0.00 0.0 M M M
4/28/2010 7:00 AM T T T M M snowed heavily for about 1/2 hour at 9 but all melted by 9:45.
4/29/2010 7:00 AM 0.00 0.0 M M M
4/30/2010 7:00 AM 0.00 0.0 M M M
5/1/2010 7:00 AM 0.00 0.0 M M M
5/2/2010 7:00 AM 0.00 0.0 M M M
5/3/2010 7:00 AM 0.00 0.0 M M M
5/4/2010 7:00 AM 0.64 M M M M
5/5/2010 7:00 AM 0.01 M M M M Lots of thunder but not much rain.
5/6/2010 7:00 AM 0.54 M M M M
5/7/2010 7:00 AM 0.00 0.0 M M M
5/11/2010 7:00 AM 0.00 0.0 M M M
5/14/2010 7:00 AM 0.43 M M M M
5/15/2010 7:00 AM T M M M M I wouldn't have known it had rained if I hadn't seen a couple of drops on the window.
5/16/2010 7:00 AM 0.00 0.0 M M M
5/17/2010 7:00 AM 0.00 0.0 M M M
5/20/2010 7:00 AM 0.00 0.0 M M M
5/21/2010 7:00 AM 0.00 0.0 M M M
5/22/2010 7:00 AM 0.00 0.0 M M M
5/23/2010 7:00 AM 0.00 0.0 M M M
5/24/2010 7:00 AM 0.00 0.0 M M M
5/25/2010 7:00 AM 0.00 0.0 M M M
5/26/2010 7:00 AM 0.00 0.0 M M M
5/27/2010 7:00 AM 0.00 0.0 M M M
5/28/2010 7:00 AM 0.00 0.0 M M M
5/29/2010 7:00 AM T M M M M
5/30/2010 7:00 AM 0.00 0.0 M M M
5/31/2010 7:00 AM 0.00 0.0 M M M
6/3/2010 7:00 AM 0.84 M M M M rain fell mostly after 10 pm
6/4/2010 7:00 AM 0.14 M M M M
6/5/2010 7:00 AM 0.26 M M M M
6/6/2010 7:00 AM 0.82 M M M M
6/7/2010 7:00 AM 0.19 M M M M
6/8/2010 7:00 AM 0.00 0.0 M M M
6/9/2010 7:00 AM T M M M M
6/10/2010 7:00 AM 0.50 M M M M
6/11/2010 7:00 AM 0.01 M M M M
6/12/2010 7:00 AM 0.02 M M M M
6/13/2010 7:00 AM 0.11 M M M M
6/14/2010 7:00 AM 0.02 M M M M
6/15/2010 7:00 AM 0.01 M M M M heavy dew this morning
6/16/2010 7:00 AM 0.00 0.0 M M M
6/17/2010 7:00 AM 0.13 M M M M
6/18/2010 7:00 AM 0.02 M M M M
6/19/2010 7:00 AM 0.00 0.0 M M M
6/20/2010 7:00 AM 0.00 0.0 M M M
6/21/2010 7:00 AM 0.00 0.0 M M M
6/22/2010 7:00 AM 0.00 0.0 M M M
6/23/2010 7:00 AM 0.02 M M M M
6/24/2010 7:00 AM 0.07 M M M M
6/25/2010 7:00 AM 0.00 0.0 M M M
6/26/2010 7:00 AM 0.00 0.0 M M M
6/27/2010 7:00 AM 0.00 0.0 M M M
6/28/2010 7:00 AM 0.30 M M M M
6/29/2010 7:00 AM 0.37 M M M M most rain fell between 2 and 4 pm Monday
6/30/2010 7:00 AM 0.00 0.0 M M M
7/1/2010 7:00 AM 0.00 0.0 M M M
7/2/2010 7:00 AM 0.00 0.0 M M M
7/3/2010 7:00 AM 0.00 0.0 M M M
7/4/2010 7:00 AM 0.00 0.0 M M M
7/5/2010 7:00 AM 0.00 0.0 M M M
7/6/2010 7:00 AM 0.00 0.0 M M M
7/7/2010 7:00 AM 0.00 0.0 M M M
7/8/2010 7:00 AM 0.00 0.0 M M M
7/9/2010 7:00 AM 0.00 0.0 M M M
7/10/2010 7:00 AM 1.32 M M M M really heavy rain between 3 or so to 6 or so.
7/11/2010 7:00 AM 0.00 0.0 M M M
7/12/2010 7:00 AM 0.00 0.0 M M M
7/13/2010 7:00 AM 0.01 M M M M
7/14/2010 9:30 AM T M M M M lots of thunder no rain
7/15/2010 7:00 AM 0.00 0.0 M M M
7/16/2010 7:00 AM T M M M M
7/17/2010 7:00 AM T M M M M
7/18/2010 9:00 AM 0.04 M M M M
7/19/2010 7:00 AM 0.00 0.0 M M M
7/20/2010 8:30 AM 0.08 M M M M
7/21/2010 7:00 AM 0.00 0.0 M M M
7/22/2010 7:00 AM 0.48 M M M M all rain fell between noon and 12:30
7/23/2010 9:30 AM 0.73 M M M M raining at 7 am
7/24/2010 7:00 AM 0.34 M M M M 0.33" fell between 2:25 and 2:35
7/25/2010 7:00 AM 0.48 M M M M
7/26/2010 7:00 AM 0.04 M M M M
7/27/2010 7:00 AM 0.00 0.0 M M M
7/28/2010 7:00 AM 0.00 0.0 M M M
7/29/2010 7:00 AM 0.23 M M M M
7/30/2010 7:00 AM 0.00 0.0 M M M
7/31/2010 7:00 AM 0.00 0.0 M M M
8/1/2010 8:30 AM 0.02 M M M M
8/2/2010 7:00 AM 0.08 M M M M
8/3/2010 7:00 AM 0.00 0.0 M M M
8/4/2010 7:00 AM 0.00 0.0 M M M
8/5/2010 7:00 AM 0.00 0.0 M M M
8/6/2010 7:00 AM 0.66 M M M M most fell between 8:20 AM and 9:45 AM
8/10/2010 7:00 AM 0.46 M M M M It rained from around 5:30 to around 8:30.
8/11/2010 7:00 AM 0.01 M M M M
8/12/2010 7:00 AM T M M M M
8/13/2010 7:00 AM 0.05 M M M M
8/14/2010 7:00 AM 0.00 0.0 M M M
8/16/2010 7:00 AM 0.26 M M M M
8/17/2010 7:00 AM 0.00 0.0 M M M
8/19/2010 7:00 AM 0.06 M M M M
8/25/2010 7:00 AM 0.03 M M M M
8/28/2010 7:00 AM 0.00 0.0 M M M
8/30/2010 7:00 AM 0.00 0.0 M M M
8/31/2010 7:00 AM 0.00 0.0 M M M
9/1/2010 7:00 AM 0.00 0.0 M M M
9/2/2010 7:00 AM 0.00 0.0 M M M
9/3/2010 7:00 AM T M M M M
9/4/2010 7:00 AM T M M M M
9/5/2010 7:00 AM 0.04 M M M M
9/7/2010 7:00 AM T M M M M
9/8/2010 7:00 AM 0.22 M M M M
9/9/2010 7:00 AM 0.02 M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
12/26/2009 12/27/2009 8:00 AM 2 0.40 M M
12/28/2009 12/30/2009 12:00 AM 3 0.05 0.6 M
12/31/2009 1/02/2010 12:00 AM 3 0.16 M 2.75 very windy, very cold
1/24/2010 1/26/2010 9:00 AM 3 0.98 M M It began raining about 3:30 pm 1/24. It rained fairly steadily until about 1:30 pm 1/25. Temps in the 50's both days. Trace precip during rest of period.
2/10/2010 2/11/2010 7:00 AM 2 0.33 4.7 M
4/25/2010 4/27/2010 12:00 AM 3 1.24 M M
5/8/2010 5/10/2010 8:00 AM 3 0.54 T M very cold and windy. trace snow
5/12/2010 5/13/2010 7:30 AM 2 0.59 M M
5/18/2010 5/19/2010 8:00 AM 2 0.18 M M
6/1/2010 6/02/2010 8:00 AM 2 0.15 M M
8/22/2010 8/23/2010 8:30 AM 2 4.29 M M not much rain before midnight Sunday. My pond (200' x 175') rose at least 2' and the field drains are running indicating that the soil is saturated.
8/24/2010 8/26/2010 8:00 AM 3 0.23 M M



Observation Date Observation Time Notes Largest Stone Size Average Stone Size Smallest Stone Size Stone Consistency Duration Minutes Durration Accuracy Damage Timing More Rain than Hail Hail Started Largest Hail Started Angle of Impact Number of Stones on Pad Distance Between Stones on Pad Depth of Stones on Ground