upstream-downstream connections in the delaware river watershed by drbc
TRANSCRIPT
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2006 Land Use/Land CoverNOAA CSC
DEVEL 15%
AG 26%
FOREST
6,288 mi2
49%
WETLANDS8%
WATER2%
BARREN <1%
DEVEL1%
AG 13%
FOREST
2,778 mi2
81%
WETLANDS3%
WATER2%
BARREN
BASIN
UPPER REGION
DEVEL10%
AG24%
FOREST1925 mi2
58%
WETLANDS6%
WATER2%
BARREN
CENTRAL REGION
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Outstanding Regional Resource
Exceptional water quality
Exceptional source water
Ecological diversity ~75% of non-tidal
river part of National Wild and Scenic Rivers System
100% of non-tidal river is Special Protection Waters
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Delaware River Watershed Facts Over 15 million people
(about 5% of the U.S. population) rely on the waters of the basin
Drains 13,539 mi² , or 0.4 of 1% of the continental U.S. land area
Longest undammed river east of the Mississippi
Daily water withdrawal in the DRB = 8.7 BGD
1
5
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Head of Tide
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Delaware River Port Complex – Largest Fresh Water Port
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1960’s Maximum
Salt Line (250 mg/l, 7 day avg)
Normal R.M. 77
Data for determination provided by the U.S. Geological Survey and Kimberly Clark Corp.
AVG. MID-MONTH
LOCATION
J an 68Feb 68Mar 67Apr 61May 64J un 67J ul 72Aug 77Sep 79Oct 81Nov 80Dec 74
MONTH
Water Supply Intakes RM 110
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Fish Consumption Advisories
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“It is the policy of the Commission that there be no measurable change to existing water quality except towards natural conditions …”
DRBC Special Protection Waters Program
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Federal Wild and Scenic River Designation – ¾ of non-tidal river
Total non-tidal river and its watershed designated DRBC Special Protection Waters
Mainstem = longest stretch of anti-degradation waters in U.S.
No measurable change in water quality
Water Quality
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Headwaters are the most sensitive areas of a watershed
Existing contiguous forest is critical to water quantity and quality
Philadelphia Source Water Protection Analysis
#1 – Change in Delaware River Headwaters
Vulnerability of Headwaters
15 M
illion
People
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Aerial view of a Marcellus Shale well site near Waynesburg, Pa. (MICHAEL BRYANT / Phila. Inquirer Photographer )
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Sea Level RiseMore Intense StormsSummer Droughts
Issues knocking on our door
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Interconnected Water Resources
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Research Needs for Policy Decisions
Data, Monitoring Modeling Aquatic Resources Value of Forests Climate Change Natural Gas Impacts Social Issues Economic Analyses
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Research Needs for Policy Decisions
Data, Monitoring Background, trends, “red flags” Qualified staff, reliable equipment, data
programs Mapping
Land Use Natural Features Prioritization of HVWRL
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Research Needs for Policy Decisions
Modeling Flow model, Salinity model, Runoff model Rank subbasins response to change Forecast change to multiple factors Connect land use change to WQ ID most critical lands to Water Resources Impact of traditional development vs LID
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Research Needs for Policy Decisions
Aquatic Resources 316(b) – Impingement/Entrainment
• Estuary – existing conditions, cumulative impact Location of key communities and habitats
Value of Forests to WQ Natural Capital, % Loss Before Impact Type, Distance from Waterbody Mapping
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Research Needs for Policy Decisions
Climate Change Scenario testing, Drought/flood of record
Natural Gas Impacts Land changes WQ Impacts
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Research Needs for Policy Decisions
Social/Community Issues Value of Clean Water to Region
Economic Analysis Effect of pricing on water use (block rates) Changes in industry/utilities – water use Natural capital analyses Economics of raising DO std. in Estuary Value of “Keeping the Clean Water Clean” Value of RBCs – Cost Effectiveness
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QUESTIONS? ww.DRBC.net
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Data, MonitoringModelingAquatic ResourcesValue of ForestsClimate ChangeNatural Gas ImpactsSocial IssuesEconomic Analyses