Delaware Basin Stream Management Program A partnership between - PowerPoint PPT Presentation

Delaware Basin Stream Management Program A partnership between NYCDEP and Delaware County Soil & Water Conservation District 2015 Update

Delaware Basin - Topics  2015 Project Updates Restoration Projects SMIP Projects CSBI Projects  2016 Project Updates Restoration Projects CSBI Projects CREP Projects  Local Flood Analysis (LFA) Updates 2

Third Brook Third Brook stream bed instability and hill slope failures  Third Brook hill slope failures were identified in the Third Brook Watershed Management Plan  ACOE WRDA funded ($510 K) through the Department of Watershed Affairs matched with DEP funds ($170 K) to stabilize slopes contributing sediment and woody debris to Third Brook above the Village of Walton  Goal was to reduce stress on slope toe, halt head cuts and bed degradation upstream, and reduce sediment deposition downstream in the village  Originally projected costs to address all slopes (1-9) exceeded WRDA funding so project was segmented

Third Brook – Sites 8 & 9  Original work took place in 2014  Spring 2015 rains resulted in flanking of EWP structure and stream bank failure  Some ACOE funds remained from 2014 construction and were available for emergency repair work on these slopes  DCSWCD also requested additional funds from DEP to facilitate the emergency work

Third Brook - Sites 8 & 9 Design  DCSWCD requested design assistance from Milone & MacBroom through DEP  The project was in part an emergency repair with additional funds provided to install boulder riffle structures and revetment (rip-rap) along the toe of slope Total length: 1,145.5 ft Total Cost: $807,638 (2014 & 2015)

Third Brook – Sites 8 & 9 Construction

Gulf Brook Streambank SMIP  Located in the Town of Andes  Bank erosion along a town road due to channel incision caused by the 2007 flood  The project was awarded a SMIP grant in 2011, design postponed to 2014 due to Hurricane Irene in 2011 and EWP projects  Project designed by DCSWCD 7

Gulf Brook Streambank SMIP  Installation of  Installation of pinned, grade control stacked rock wall on structures right bank downstream of wall  Project completed in September 2015 at a cost of $71,102 8

Holiday Brook Restoration SMIP  Located in the Town of Andes  Stream bank instability exacerbated by unstable stream bed 9

Holiday Brook Restoration SMIP  Installation of rip-rap to stabilize right bank, up stream of culvert  Installation of grade control structures (hardened  Installation of hardened riffles riffles) upstream and for grade control upstream and downstream of culvert downstream of culvert  Project completed in September 2015 at a cost of $39,110

Delhi River Walk – Hoyt Park  SMIP grant for River Walk Design - $39,750  SMIP grant for completion of River Walk - $60,537  Improve stream riparian buffer  Stabilize stream bank  Remove invasive Japanese Knotweed 11

Delhi Boat Launch – Hoyt Park  SMIP grant for boat launch $61,200  Improve access for recreational activities: Boating Tubing Kayaking Fishing  Village of Delhi was also awarded funding by: CWC Stormwater Retrofit Program $94,000 DOS Local Waterfront Revitalization Program $107,666 OPRHP Recreational Trails Grant Program $163,862 12

Walton Green Space Project • f  Located at the site of the former Walton Reporter building  Goal is to allow conveyance of flood waters from Delaware Street back to West Branch Delaware River Walton  Senator Bonacic grant ($100 K) and local contributions from the Town of Walton ($20,678), Village of Walton($33,295), and Delaware County ($17,685) for purchase and removal of Walton Reporter building  Stream Management Program contributed $20,000 for floodplain grading and installation of stormwater infiltration trench Walton Greene Space $20,000 to complete final grading

Walton Gravel Study SMIP  Walton High School Environmental Science students completed cross- sectional surveys and pebble counts at eight stream sites in the Village of Walton from 2013 - 2015  Determine if stream channel is aggrading, degrading, or in equilibrium  Presented results to Walton Flood Commission on November 5, 2015 BRANDOW'S & BREAKEY'S 102 100 98 Elevation 96 94 92 90 88 11/21/2013 86 5/21/2013 84 82 6/3/2013 10/5/2015 Feet on the Cam Line

2015 CSBI Projects • Project f Bank Length (feet) Amount Hamden: Terry Clove Native Planting 460 $5,690 Andes: Beech Hill Knotweed Control (year 3) 2600 $2,414 Walton Delhi: Little Delaware Trib Post IS Control Native Planting 650 $4,762 New Kingston: Thomson Hollow IS Control 600 $730 New Kingston: Thomson Hollow Native Planting 680 $2,987 Walton: County Route 22 East Brook Native Planting 1420 $15,200 SUNY Delhi Outdoor Education Center Planting 375 $375 Walton Greene Space $20,000 to complete final grading Roxbury Elementary School Planting 60 $43 Walton Third Brook Student Planting 720 $357 Walton Knotweed pull – Delaware Avenue 4H 90 - Delhi Hoyt Park Knotweed pull and clean-up 325 -

2015 CSBI Projects Terry Clove Little Delaware Tributary Town of Hamden Town of Delhi Total length: 650 feet Total length: 460 feet Buffer width: 25 feet Buffer width: 15 feet (both sides) Acres: 0.32 Acres: 0.21 Potted plants: 300 Potted plants: 175 Herbaceous plugs: 448 Herbaceous plugs: 428 Live stakes: 220 Live stakes: 300

2015 SMIP Grants Awarded 2015 SMIP Grant Awards - approved by PAC on September 10, 2015 Recipient Type Project Stream Amount Village of Delhi River Walk West Branch $60,534 Delaware County DPW Streambank stabilization East Brook $285,522 Village of Walton Streambank stabilization West Branch $398,545 Town of Bovina Culvert replacement Little Delaware trib $268,188 Town of Tompkins Culvert design Carrol Hollow $30,000 Town of Hamden Streambank stabilization East Brook $66,366 Town of Walton Stream bed stabilization Beers Brook $31,645 Town of Middletown Culvert design Platte Kill trib $30,000 Town of Stamford Streambank stabilization Town Brook $31,527 Village of Hobart Streambank stabilization Grant Brook $22,910 Total $1,225,239 Delaware County SWCD also leveraged matching funds from the DEC WQIP for: Miller Avenue Culvert Replacement in Bovina $182,856 South Street Streambank Stabilization in Walton $763,732

Total SMIP Grants Awarded Project Type Number of Projects Streambank Restoration 10 Stormwater 3 Recreation 8 Education 1 Infrastructure 9 Flood Hazard Mitigation 4 Total Number of Projects 35 Total SMIP Funding Awarded $2,809,384.96

More Restoration Project  Located in the Town of Hamden  Site identified in WBDR Stream Management Plan as lacking adequate Project site riparian buffer  Gradual bar formation and down valley meander migration has resulted in over widened condition  Project goals: • establish stable stream channel that maintains proper sediment transport • establish riparian buffer for long term stability of reach 19

More Restoration Project - Tasks  Determined hydrology and verified using multiple sources  Identified bankfull indicators in April 2015 event and calibrated hydraulic model of bankfull to indicators  Calculated cross-sectional area  Calculated range for alignment geometry  Determined potential alignments  Obtained landowner agreements  Working on cropland CREP facilitation  Coordinating with the Farm Easement Program  Planned to be constructed in 2016 20

Other Projects 2016 SCMP Project # Projects Status 1 More Project in Hamden In Design 2 Little Delaware in Bovina 60% Design - SHPO archeology Redesign for avoidance on archeology 3 Hamden Boat Launch sensitive area Redesign for avoidance on archeology 4 Walton Boat Launch sensitive area 5 Walton Water St Floodplain Concept Design 6 Fleischmanns Site 4 Floodplain Designed (Buy-out on hold) 2016 CSBI Projects # Projects Status 1 Oliver Farm in Meredith Designed 2 Depot Street in Fleischmanns Designed 3 Willow Drive in Middletown In Design 2016 Ag Projects # Projects Status 1 Steve Boyd in Walton 60% Design 2 Laura Phoenix in Hamden 30% Design 3 Willard Frisbee in Delhi Concept Design

LFA Updates Delaware Basin Local Flood Analysis (LFA) Updates

Walton LFA – Status of Implementation  LFA completed for West Branch Delaware River in April 2015  Village of Walton has applied to CWC for funding to complete two feasibility studies that are associated with Water Street floodplain restoration: 1. CWC has approved funding for feasibility study for relocation of cell tower 2. CWC is reviewing funding application to complete feasibility study for relocation of underground infrastructure  The Walton Flood Commission meets monthly to continue work on implementation of projects and review tributary analyses

Water Street Floodplain Restoration

Walton Tributary Analyses

East Brook Analysis