Planning and Development:Countywide Groundwater … County Office: ... Vanderbilt Mansion...

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#19: Sawkill CreekRoute 9Red Hook, NY

#5: Sepascot FarmRhinebeck, NY

#20: Landsmankill CreekRhinebeck, NY

#11: Town of Milan Highway GarageMilan, NY

#9: Pulver ResidencePine Plains, NY

#15: Upper Wappinger Creek @Town of Clinton Line

#17: East Branck Wappinger Creek @Hibernia Road Bridge

#13: Institute of Ecosystem StudiesWarner ResidenceMillbrook, NY

#16: Little Wappinger CreekBelow Salt Point DamSalt Point Turnpike

#4: Hahn FarmSalt Point Turnpike

#1: Vanderbilt Mansion

#18: Crum Elbow CreekRoute 41Hyde Park, NY

#14: Wappinger Creek @Route 44, Behind Town HallPleasant Valley, NY

#8: Tanner ResidenceLa Grange, NY

#13: Wappinger Creek @Red Oaks MillUSGS Gauging Station

#10: High Meadows Co-OpDover Plains, NY

#4:Ten Mile RiverTen Mile River DriveDover Plains, NY

#2: Swamp River @Route 6Old Post Road

#1: Ten Mile River @NY/Conn BorderUSGS Gauging StationOld Forge Road

#11: Fishkill Creek @Union Vale/Beekman LineRoute 55

#6: Deefield Ponds DevelopmentPawling, NY

#9: Sprout Creek near La GrangeBridge on Route 376

#10: Fishkill Creek @E. Fishkill/Beekman Line Phillips Road

#8: Sprout Creak near Fishkill Mountainview Road

#6: Webatuk Creek @Leedsville Road

#5: Amenia Brook @Wassaic

#2: DCWWA Pump HouseStaatsburgh, NY

#7: Boss ResidenceEast Fishkill, NY

#7 Fishkill Creek @ BeaconUSGS Gauging Station

#21: East Fishkill LandfillEast Fishkill, NY

Created by:

Date:

Scale:

Project #:

CHAZEN ENGINEERING & LAND SURVEYING CO., P.C.Dutchess County Office:21 Fox StreetPoughkeepsie, New York 12601Phone: (845) 454-3980

Orange County Office:263 Route 17KNewburgh, New York 12550Phone: (845) 567-1133

Capital District Office:20 Gurley AvenueTroy, New York 12182Phone: (518) 235-8050

North Country Office:110 Glen StreetGlens Falls, New York 12801Phone: (518) 812-0513

This map is a product of The Chazen Companies. It should be used for reference purposes only. Reasonable efforts have been made to ensure the accuracyof this map. The Chazen Companies expressly disclaims any responsibilities or liabilities from the use of this map for any purpose other than its intended use.

Engineers/SurveyorsPlannersEnvironmental ScientistsGIS Consultants

STFRUM

July 2006

40130.00

´FIGURE 1 - WATER RESOURCES

MONITORINGPROGRAM LOCATION MAP

Dutchess County Water & Wastewater Authority 1 inch equals 3.5 miles

Notes:

Sub-watersheds that have a purple color scheme fall within the Ten Mile River Watershed.Sub-watersheds that have a green color scheme fall within the Fishkill Creek Watershed.Sub-watersheds that have a red color scheme fall within the Wappingers Creek Watershed.

Blue lines are stream segments, where available

Legend!( Rain Gauge!< Monitoring Well!( Stream Gauge&- Infiltration Gauge

Figure 2. Vanderbilt Mansion Groundwater Level Data: 1948 - 2005

The Chazen CompaniesJuly 2006

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USGS Data: 2004-2006

Figure 3. Staatsburg Wellfield Well: Groundwater Level and Precipitation


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Figure 4. Hahn Farm: Groundwater Level and Precipitation


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Figure 5. Sepascot Property: Groundwater Level and Precipitation


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Figure 6. Deerfield Ponds: Groundwater level and Precipitation


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Figure 7. IES Residential Well: Groundwater Level and Precipitation


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Figure 8. Boss Residence Site: Groundwater Level and Precipitation


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Figure 9. Tanner Residence: Groundwater Level and Precipitation


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Figure 10. Pulver Residence: Groundwater Level and Precipitation


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Figure 11: Dover High Meadows: Groundwater Level and Precipitation


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Figure 12. Milan Highway Garage: Groundwater Level and Precipitation


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Figure 13: East Fishkill: Groundwater Level and Precipitation


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Figure 14: Vanderbilt Mansion well: Groundwater Level and Stream Flow


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Figure 15 - Monthly e-coli Detections

Sources:Smith Labs extrapolated data.DCDOH reported data.


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Figure 16 - Weekly e-coli Detections


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Figure 17 - Analysis of e-coli Detections and IES Residential Well Level

Note: This analysis seeks possiblecorrelations between County-wideecoli failures and this observed well.


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60 days E -coli detections appear to lag between 1 and 4 weeks following groundwater level recovery,perhaps due to groundwater recovery, or as a function of collection and lab analysis schedules

Periods between groundwater peaks and the first of a series of e -coli detections are noted.

Figure 18 - Analysis of e-coli Detections and Deerfields Pond Well Level

Note: ecoli detections are County-wide, NOT from Deerfield ponds well.The Chazen Companies

July 2006

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Figure 19: 24 hour Rainfall Event Analysis

The Chazen Companies July 2006

IES Rain 1988- 2005, 6570 days of data

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Table 1: Four-year Record of Table 1. Five-year Record of Monthly Precipitation

2001 2002 2003 2004 2005(Inches) (Inches) (Inches) (Inches) (Inches)

January 1.9 1.5 3.8 2.3 6.5February 2.6 1.2 3.8 1.9 1.9

March 5.1 2.6 3.7 2.2 4.4April 1.3 3.9 1.2 3.2 2.9May 2.3 5.5 4.4 3.1 2.0June 5.0 5.2 4.4 2.5 3.0July 2.4 0.9 2.6 4.7 4.1

August 2.1 4.0 5.6 5.8 1.9September 5.4 4.6 9.3 10.0 0.7

October 0.8 4.7 4.7 2.1 16.7November 0.9 5.8 4.4 2.9 5.4December 1.9 5.1 6.9 3.4 4.0

Annual rainfall totals: 31.7 45.1 54.9 44.1 53.5Storm Statistics 2001 2002 2003 2004 2005

# Storms 0.01 to 0.5 inch 77 91 104 110 102# Storms 0.51 to 1 inch 15 16 17 16 15# Storms 1.01 to 2 inch 8 14 15 6 12# Storms 2.01 to 3 inch 0 1 2 0 1

# Storms > 3 inch 0 0 0 2 1Total # of rainfall events 100 122 138 134 131

* All data recorded at Institute of Ecosystem Studies (IES), Millbrook, NY

Month


Table 2: Site Characeristics at DCWWA monitoring locations

Monitoring Town Hydrologic Bedrock Monitored Rain InfiltrationSite Name Soil Type Formation Well Gauge Gauge

Boss Residence East Fishkill D bgpc (Crystalline) √ √IES Millbrook C Cn (Meta Sedimentary) √ *

Tanner Residence LaGrange C Cn (Meta Sedimentary) √ √Sepascot Rhinebeck B Oag (Meta Sedimentary) √ √

Staatsburg Staatsburg D Oag (Meta Sedimentary) √ √Vanderbilt Hyde Park A Oag (Meta Sedimentary) √ √

Milan Milan A/D Owl (Meta Sedimentary) √ √ √East Fishkill East Fishkill B Ocw (Carbonate) √ √ √

High Medows Dover C Cn (Meta Sedimentary) √ √Hahn Farm Salt Point C Oag (Meta Sedimentary) √ √

Pulver Residence Pine Plains C/D Cw √ √Deerfield Ponds Pawling B Ocst (Carbonate) √ √

* Rain Gauge not needed on site because rain data monitored and available through IES


TABLE 3 - Stream Gaging Data

Q90* 7Q10*acres cfs gpm gal / day gal / day / acre cfs gpm gal / day gal / day / acre cfs gpm gal / day gal / day / acre cfs gpm gal / day gal / day / acre gal/day/acre gal/day/acre

USGS Flow Data: Tenmile at CT Border (Old Forge Rd) 131,562 28.30 12702 18,290,720 139 25.30 11355 16,351,775 124 26.33 11818 17,017,479 129 21.50 9650 13,895,777 106 169 61

1 Tenmile at CT Border (Old Forge Rd)(USGS Gaging Station) 131,562 22.95 10301 14,832,934 113 27.74 12448 17,925,552 136 19.22 8624 12,418,947 94 11.74 5269 7,587,740 58 169 61

4 Tenmile in Dover Plains (Tenmile River Drive) 90,950 16.30 7316 10,534,938 116 17.26 7745 11,152,169 123 13.85 6216 8,951,466 98 5.99 2688 3,871,428 43 na na

6 Webatuk Ck at Leedsville Road 35,574 4.35 1952 2,811,471 79 4.33 1941 2,795,313 79 3.59 1609 2,317,040 65 1.37 615 885,452 25 na na

2 Swamp River: @ Route 6 (Old Post Road) 31,490 5.05 2267 3,263,892 104 3.98 1784 2,569,103 82 2.27 1017 1,463,904 46 1.660 745 1,072,883 34 135 33

5 Amenia Brook at Wassaic (Across from Fire Station) 7,135 1.70 763 1,098,736 154 1.93 866 1,247,388 175 1.43 640 920,999 129 0.810 364 523,515 73 136 59

7 Fishkill Creek at Beacon (Bridge Street, Old USGS Station) 126,125 16.85 7563 10,890,411 86 26.73 11995 17,272,774 137 13.54 6075 8,747,876 69 6.45 2895 4,168,733 33 128 31

8 Sprout Ck near Fishkill (Mountainview Road) 38,855 2.90 1302 1,874,314 48 3.56 1598 2,300,882 59 4.04 1811 2,607,882 67 0.07 31 45,242 1 na na

9 Sprout Ck near La Grange (Bridge on Route 376) 36,320 3.30 1481 2,132,840 59 5.66 2538 3,654,912 101 5.10 2287 3,292,976 91 0.25 112 161,579 4 77 5

10 Fishkill Ck at E. Fishkill/Beekman Line (Phillips Road) 31,769 5.60 2513 3,619,365 114 7.52 3375 4,860,290 153 4.01 1800 2,591,724 82 3.33 1495 2,152,230 68 na na

11 Fishkill Ck at Beekman/Unionvale Line (Route 55) 10,096 2.45 1100 1,583,472 157 4.75 2130 3,066,766 304 3.00 1344 1,935,714 192 1.07 480 691,557 68 na na

USGS Flow Data: Wappinger Ck at Red Oaks Mills 109,232 14.00 6284 9,048,413 83 14.00 6284 9,048,413 83 12.00 5386 7,755,782 71 6.60 2962 4,265,680 39 124 45

13 Wappinger Ck at Red Oaks Mill (USGS Gaging Station) 109,232 15.65 7024 10,114,833 93 17.17 7706 11,097,232 102 12.03 5397 7,771,940 71 5.42 2433 3,503,028 32 124 45

14 Wappinger Ck at Pleasant Valley (Rt 44 behind Town Hall) 99,610 14.65 6575 9,468,518 95 13.37 5999 8,638,003 87 7.27 3263 4,698,712 47 NG NG NG NA na na

15 Upper Wappinger Ck @ Clinton Line (Park at Hibernia Rd) 36,397 5.95 2671 3,845,575 106 3.67 1647 2,371,977 65 3.37 1511 2,175,174 60 NG NG NG NA 133** 48**

17 East Branch Wappinger Ck (Hibernia Road Bridge) 21,618 3.15 1414 2,035,893 94 3.32 1490 2,145,766 99 3.48 1561 2,247,884 104 NG NG NG NA 164 63

16 Little Wappinger Ck (Salt Point Turnpike @ Salt Point Dam) 20,557 0.85 382 549,368 27 0.71 319 458,884 22 0.69 309 444,245 22 NG NG NG NA na na

Crum Elbow 18 Crum Elbow Ck (Hyde Park bridge crossing at Route 41) 12,556 0.70 314 452,421 36 0.66 296 426,568 34 0.54 240 346,037 28 0.19 85 122,800 10 98 8

Sawkill 19 Sawkill Ck at Red Hook (Route 9) 12,515 1.60 718 1,034,104 83 3.24 1452 2,090,830 167 1.89 846 1,218,304 97 1.75 785 1,131,052 90 238 129Landsman

Kill 20 Landsman Kill Ck (Downtown Rhinebeck) 6,826 4.50 2020 2,908,418 426 1.07 480 691,557 101 0.58 261 375,800 55 0.72 323 465,347 68 95 0

** Calculated by subtracting value for East Branch Wappingers from value just downstream of confluence point.na - no statistical data available for this locationData rows with identified Site numbers were gaged by The Chazen Companies with or without DCWWA staff depending on session.

* Q90 is the 90% exceedence value for groundwater yield, based on the period of record from 1931-1960. 7Q10 is the lowest seven day average yield that occurs every 10 years. Q90 and 7Q10 values for stream discharge (Ayer and Pauszek, 1968) were used to calculate the Q90 and 7Q10 for groundwater yield.

StreamflowStreamflow Groundwater Yield per Acre

Wappinger Creek

Water

shed

s November 6-8, 2001

Fishkill Creek

Tenmile River

Site #Groundwater Yield per Acre

1931-1960Groundwater Yield per Acre

October 5-7, 2005

Streamflow Groundwater Yield per AcreWaterway Name and Gaging Location

Contributing Area Upstream of Gaging Site

August 12-14, 2002 September 24-26, 2002

StreamflowGroundwater Yield per Acre


Table 4. Monitoring Equipment Reliability Tracker


0

2

4

6

8

10

12

Nov-04 Dec-04 Jan-05 Feb-05 Mar-05 Apr-05 May-05 Jun-05 Jul-05 Aug-05 Sep-05 Oct-05 Nov-05 Dec-05Time

Data

High Meadow

Precipitation Data Water Level Data

Milan

DeerfieldBoss

TannerIES

Hahn FarmStaatsburg

PulverSepascot Farm

East Fishkill

Vanderbilt MansionMonitored by USGS

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