1	Souhegan River Protected Instream Flow Study and Water Management Plan Technical Review Committee Meeting 1 April 2005 University of New Hampshire University of Massachusetts Normandeau Associates, Inc.
2	Assessment of Well Withdrawal Impacts on Surface Water
3	Do groundwater withdrawals reduce streamflow? If the groundwater had not been pumped, where was it going? Discharge to river, tributaries, or other surface waters Continued groundwater movement Deeper groundwater circulation
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6	Can reductions to groundwater pumping be used at low flow times as one type of management strategy to meet instream flow needs? Are individual wells inducing river water recharge?
7	Ambient Groundwater Hydraulics
8	Effect of Relatively Small Quantities of Groundwater Withdrawals
9	Effect of Increasing the Quantity of Groundwater Withdrawals
10	Induced Recharge
11	Stagnation Point
12	Short Term Groundwater Management
13	Methodology for Well Pumping
14	Estimate of Induced Recharge Potential
15	Groundwater WMP Strategy
16	Aquifer Thickness and Transmissivity
17	Aquifer Piezometric Map
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27	Ambient Groundwater Velocity
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33	Field Measurements – Miniature Piezometers or Wells
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36	Flow dependent resources Recreation Hydroelectric Energy Pollution Abatement Fowlers Toad Pied Billed Grebe Wood Turtle Osprey Common Loon Long’s Bitter Cress Wild Garlic Emergent Wetlands Southern New England High Energy Riverbank Southern New England Floodplain Forest Fish and Fish Habitat Mussels Insects T/E Banded Sunfish River Morphology Public Water Supply
37	PISF to WMP Different resources dependent on different flows (low, average, high) Where possible, flows will be described in terms of frequency of occurrence and duration of events relative to benchmarks Multi-species approach will be used where appropriate Conflicts among resource needs and between resource needs and water user/dam owner needs will be identified, if present MCDA is one tool we will look at for resolving conflicts
38	Hypothetical Flow Needs
39	Hydropower and Recreational Dams on the Designated Reach (Hydropower, Recreation)
40	Affected Water Users Amherst Country Club Buckmeadow Golf Club Town of Greenville Water and WWTF Alden Greenwood Hydro Plants Town of Milford Water and WWTF Monadnock Springs Milford Fish Hatchery Pennichuck Water Works Peter De Bruyn Kopps Pike Industries Pilgrim Foods Ponemah Green Golf Course Souhegan Woods Golf Club Wilton Water Works
41	Types of Water Users and Dam Owners Golf Courses – spring/summer water use Water Supply – year round use Hydropower – fall through spring Industrial/Food Processing – year round Agricultural – summer water use Fish Hatchery – year round use
42	Available Flow for Management Average August flow from all surface water withdrawals is 2 cfs. At times (specific days or time of day) flow attributable to withdrawals is higher. Most larger withdrawals are in lower section of river Some withdrawals return flow to river Some groundwater withdrawals return as surface discharges
43	Conservation Plan Identify AWUs Identify Water Use Types Conservation Measures BMPs Description of AWU Characteristics Flow Pattern Variability History Conservation Opportunities Historic Conservation BMPs 5-year Plan Economics New Technologies Implementation Schedule Description of Measures Target Dates ALL PERFORMED THROUGH MEETINGS AND DISCUSSIONS WITH EACH AWU
44	Potential Conservation Measures Leak Detection Stockpiling of resources Recycling of water Reuse of water Wetting agents in soil BMP’s Low flow devices (sprinklers, showers, toilets) Education
45	Water Use Plan AWU Water Use Data Potential Modifications Effect of PISF on Other Uses Overall Water Use Plan Implementation Schedule Economic Assessment ALL PERFORMED THROUGH MEETINGS AND DISCUSSIONS WITH EACH AWU
46	Potential Water Use Measures Time sharing of water (coordination) Watering restrictions System wide or specific use restrictions Use of storage Release from storage on designated reach or upstream Process modification Process slowdown or shutdown
47	Dam Management Plan Individual ADO Information and Specifications Potential for Low Flow Augmentation/Regulation (Relative Reservoir Size) Downstream Ecologic Restrictions Operation Strategies to Meet PISF Implementation Schedule Economic Assessment ALL PERFORMED THROUGH MEETINGS AND DISCUSSIONS WITH EACH ADO
48	Potential Short Term Dam Measures Coordination of multiple dams Run of the river operation Release from storage Spill/generation scheduling shift
49	Stakeholder Surveys
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