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HomeMy Public PortalAboutRainGardenWorkshop_SLIDESWhat is a "rain garden?" 0 groundSweli ❑esigns On your yard.... One acre= 43,560 sf 1 inch of rain= 27,150 gallons/acre ■ MA annual rainfall 45.4" That's 1,232,610 gallons in your yard each year! 0 groundSweli ❑esigns Really? ■ Historic flooding Elevated nutrient levels Coastal erosion 27% of MA streams & rivers "impaired" 0 groundSweli ❑esigns JSINESS OBITUARIES Metro SPORTS OPINION LIFESTYLE MAGAZINE INSIDERS GLOBE NORTH GLOBE SOUTH GLOBE WEST TERROR AT THE MARATHON Saarc h TODAY'S PAPER WY SAVED 66 BLOCKS relentless rain floods roads, opens up sinloles By Jacqueline Tempera j CLOBE CORRESPONDENT MARCH 31, 2014 DAVLD L RYANf C LOBE pan naa:l_a r_a ar+ir_nai r_.__. L�_Y boston.com Search HOME TODAY'S GLOBE YOUR TOWN BUSINESS SPORTS LIFESTYLE A&E THINC Local National World Politics Education YaurCampus Opinion Health Dbituarias Special Reports HOME NEWS LOCAL NEWS h'AS SACH US ETTS NEWS Flooding leads tlarge closures, traffic delays By Lara Salah,i i Boston.corn Corras pord ert i March 30. 2014 ComrnL-nts (10) LEmail story 10 Fw bnark ©Twitter I +tea,■ �Lir k ad I r EDRadd it C]Shara Print stDrias Buy reprints -ern fight rain has led to flc c d ing c f mamy rca d s a n d h ighways a cross Al a ssachusetts. The National Weather Sen ice h a s issu ed a co a stal fle c d ing a d- ise ry in pla ce u nta 3 a.m. Monday. Source: CRWA 1 CAUTION O\- POSTED ; Based on counvfs of the anobacteria (allua-grmm allgae), MDPH thraahoWs for rraVfl0PlRi water have been exuded, a WaW wNch hors like Chm pk:ture& abov& may ciontaifi algae =paw of praduci ng toxrm that i an t�e dangerous to humane, and * Pee and pft sA amid cct In areem of alga e rlr'90W a Do riot swallm water and rkn5e op $fler conLid MA depai1ment of PUMlic NkLka#th -at 617-624 -67 67 mwfpl A Or OPP ". y a — .�'r' � `� i• # is , 6p ry Source: Boston Globe tip, � What do rain gardens look like? 0 groundSwell ❑esigns k� 7-7 Pon_- MINIL.19AS'p, P, 'a 4 T I Js. 4. 40.k a fi -OPIO IL� il�tunl r il�ll�� x Ott i "s. ti ram• - - �-: . 1, _ ,ter •. � - ��-:... - y - y i 44 15. JS �/• - .:�y�, 1 _ i. .lip /� _ Yi. •,�` �,•� :1�:d:••\ y, j •.• �. '7Y �.1►yT,+��: ^ �-' �`.y-ri �i�' `"r. ro - ' ..:�_..�"Ifs. •.,. �. � � ���C - �.t: ._��ch� dam• ..;�� r�� f r �:. .�f. J f�4i �,,,! �„-,,,., , } .'�j' r i: •, �- "fit•• •�••, �r.. �:� t �4 _ .... 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Check Your Drainage Rate Check your site's drainage rate with this simple percolation test: Dig a hole below r your lawn's thatch layer about 6 inches deep and fill it with water. If there is still wa- ter in the hole after 24 hours, the site is not suitable for a rain garden. F� Determine Soil Texture Since well -drained (sandy or loamy) soils work best, do a quick texture test to see if that's what you've got. Squeeze a small, moistened bit of soil in your hand - if it breaks, that's good! If it resists breaking and forms a ribbon (shown left), your soil may be y� too fine -textured or have too much clay for g ra u n d Swe I I - your rain garden to function properly. The Qes6gns link below provides more information about sail testing. Remembw if your soils are poorly drained, or the test hole still has water after 24 hours. the site is not suitable for a rain garden. A more detailed design manual with accommodations for poorly drained soils can be found at the following link: http: //dnr. wi. gov/runoff/pdf/ rglrgmanual.pdf JTown Boundary ,'.Natershed Boundary Type EW Unknown A B C aD D BOSTON CA MBRI❑GE 1`I---1II— jilt �Ii�t1{E.wa,ljoe26rir1l�� f I I 21_.,I _.3 l 9 S i I USDA - You are here; web Soil Survey Horne % 1 4 y Horne Enter Keywords lao The simple yet powerful way All M1RCS Sites tc Access and use soil dcta. 15- soils Home Welcome to Web Soil Survey (W) � National CooPeratiwe Web Soil Survey (WSS) provides soil data and SoiI Survey (NC P>) information produced by the National c Archived Soil Surreys ; Cooperative Soil Survey. It is operated by the USDA Natural Resources Conservation Service b Slatus maps (NRCS) and provides access to the largest n• QHicial Soil Series natural resource information system in the Descriptions (OSQ) - world. NRCS has soil maps and data available online for more than 95 percent of the Soil Series I-xteni r' ation's counties and anticipates having 100 percent in the near Mapping Tool Future. The site is updated and maintained online as the single Geospatial Data Gateway authoritative source of sail survey information, eF0TG Soil surveys can be used for general farm, local, and wider area c National Soil planning. Onsite investigation is needed in some cases, such as soil characterizalion Data Quality assessments and certain conservation and engineering applications. For more detailed information, contact your local USDA Sail Geochemistry Service Center or your NRCS State Soil Scientist. Spatial Database Four Basic Steps 15. soil ouality b Soil Geography Oefin , F Use the Area c f Interest tab Areato P derine your area of interest. I lift 1A110V1 3 I Want To... Start Web Soil Survey (WSS) Know the requirements For running Web Soil Survey — will Web Soil Survey work in my web browser? Know the Web Soil Survey hours of operation Find what areas of the U.S. have sail data Find information by topic Know how to hyperlink From other documents to Web Soil Survey TA nnouncefnents/Even Web Soil Survey 3.1 has been released! View description of new features and fixes. Web Soil Survey Release History Sign up for e-mail updates via GovDelivery I Want Help With.. Getting Started With Web Soil Survey Haw to use Web Sail Survey How to use Web Soil Survey Online Help Known Problems and Workarounds Frequently Asked Questions Determine Size What Size Should My Rain Garden Be? • 25% of this roof area drains to downspout 60' Total roof area: 30' x 60' = 1800ft2 1800 ft2 x .25 = 450 ft2 Drainage area = 450ft2 0 groundSwell Designs Define Drainage Area Determine the amount of impervious surface that will drain to your rain garden. If your garden will receive roof runoff, measure the footprint of your house tithe area taken up by your house if you were looking down from above). Then, estimate how much of this area actually contributes to the gutter downspout. In other words, if it were rain- ing, what portion of the roof area would be contributing water to the garden? This is your drainage area. Do a Little Math Divide this number by six. This calculation sizes the garden to hold one inch of roof runoff in a garden 6" deep. This is the area you will need for your rain garden. ■ fi Know what's below. Call before you dig. Identify underground utilties before digging by calling DIGSAFE 888-DIG-SAFE 0 :: grourdSwell ❑esigns How Do I Install a Rain Garden? Now it's time to start digging! The best time to install a rain garden is in the spring, when digging will be easier and plants will be more likely to thrive. Smaller gardens can be dug by hand with a shovel, or equipment can be rented for larger gardens. Most gardens for aver- age sized homes can be dug by hand if you are in good health or have some extra help. Lay out the Shape Once you feel confident in the placement of the garden, lay out this to dig. A garden hose or string can be helpful for this. If the yard is level, e depression to the proper depth, adding an additional 2-3 inches to accommodate mu the yard is sloped, you may need to construct a small berm at the downslope side to prevent the soil from washing away (see illustration, right). Use the soil that was removed from the upslope side of the garden and add it to the downslope side. If possible, direct water toward your garden with a downspout extension. Level the Bottom The garden's bottom should be fairly level to encourage the even distribution of stormwater and increase infiltration. A string or board can be helpful for this: just lay either across the garden (make sure the string is tight) at the level of the lawn, and measure down with a tape measure. Slope the Edges & Mulch ... but don't make them too steep, as steep slopes tend to erode easily. 2-3 inches of non - dyed, hardwood mulch should be placed in the garden to stabilize the soils and help prevent erosion. Consider adding crushed stone at the inflow to prevent water from channeling. Diagram illustrates before digging has Dccurred. Downhill Uphill stake stake I String I t 6 inches T opted from Uniwrsity o, f Wiscomin Fx&nsion, } n Cwv& . A How-to Mdnua# k Bomeou ers. diagram illustratesafter digging has occurred. Downhill Uphill stake stake Berm String Old lawn I surface flinches---- }`---�+-----+-JBase ofrain narden pt fivm Univernty ofWiscomin Exk wn, Rain Qrdm: A How-to Manual for Honmowners. 0 groundSweli [Designs boose your Plants What Plants Should I Use? Amelanchler laevis: Allegheny Serviceberry Q. Why are native Ilex opaca: American Holly plants so important Trees Cornus alternifolia: Pagoda Dogwood in my rain garden? Acer rubrum: Fled Maple A. Native plants are used to our New ••••••w•••w•■•■•••••••••••••••••■•■■•w•■•w•■ England climate and can tolerate Ilex glabra: Inkberry harsh conditions Ilex verticillata: Winterberry of a rain garde -- Shrubs brrdera benzoin: Spicebush and can require Viburnum dentatum: Arrowwood less maintenance! Natives also provide •••••••■•••••■••■••••■••■•••■••••••••■•■•••■ afood source for beneficial _ insects, birds and Carex stricta: Tussock Sedge butterflies. Grasses Panicum virgatum: Switchgrass Schizachyrium scoparium: Little Buestem Juncus effusus: Soft Rush Eupatorium purpureum: Joe Pye Weed Iris versicolor: Blue Flag Iris ►► For more information about plant selection, Perennials Liatris spicata: Blazing Star see: http://www.uri.edu/ ❑icentra eximia: Wild Bleeding Heart cels/ceoc/coastalPlants/ Coastali'lantG u ide. htm groundswell ❑esions i Planting Design ■ Site analysis: Topography Sun/wind Soil Scale Circulation Utilities & Ordinances Know how big your plants will get!! Franklin is zone 5b 0 groundSweli ❑esigns TOP SLOPE 0 groundSwell ❑esigns F. MODERATE MMRW Keep it Up! How do I Maintain My Rain Garden? It is important to i nspect your garden regularly to ensure that it is functioning properly, but generally, maintaining your rain garden is not much different from maintaining any other newly planted area. In the years following installation, you may need to remove dead plant material and top -dress the mulch. Shrubs can be pruned, if desired,or left to fill out naturally. Now you can sit back and enjoy the beauty of your rain garden, knowing that it is performing an important function in the protection of our water resources! Water Early on, the garden should be watered once weekly, unless 1 " of rain has already accumulated in a given week. After the plants are estab- lished, it may be neces- sary to water it during drought periods in mid summer. 0 groundSwell [Designs Weed and Mulch At first, you will need to weed weekly in the growing season - less often as your plants be- come established. Mulch each spring to discour- age weeds and erosion. Consider leaving seed heads on perennials through the winter for interest and wildlife. Inspect Check regularly for signs of: • erosion • excess ponding • accumulation of silt or sedimentation. Remove sediment carefully to avoid disturbing plants. Monitor your garden for sedimentation after heavy storm events. Fertilizing is not part of maintaining your rain garden. The plants will take up more Correct water as they If gullies are present mature. If your where water enters the garden is sized garden, consider add- correctly, you can ing stones to spread the correct temporary flow of water. If there is excess ponding erosion at the overflow by allowing for area, build up the soil overflow to an and add plants. adjacent pervious area. Installation Review Call sll Outline area Remove sod Excavate Ammend as needed Prep berm if needed Level base Plant Mulch 0 groundSweli Water [Designs Downspout r i Total roof area approximately 3,155 sq ft v Approximate location of rain garden 6 e •111� Photo credit: Town of Franklin % d �j ir RAIN GARDEN SIZE= @ 13 5 SF Approximate location of rain garden .. _ ROOF AREA= Downspout 37155 SF DRAINAGE AREA= 789 SF Total roof are _ � 4t. ir hL approximately �• y 3,155 sq ft , , z 0 x w N w w LL ad DPW BUILDING 1 5' 8' SECTION VIEW NTS 2' WIDE CRUSHED STONE SPILLWAY 15'' S�RE� F�SN�R PLAN VIEW NTS 1 '2" I ENGINEERING DIVISION TOWN OF FRANKLIN DEPARTMENT OF PUBLIC WORKS DPW RAIN GARDEN MpRIT YN1tl[II plE PIIgHT X0. 9FET -- 4/11/14 - 1 -- MW --- Plants @ 257 Fisher St. Rain Garden Yellow Coneflower (Echinacea Paradoxa) Inkberry (Ilex Glabra) Blue Flag Iris (Iris Versicolor) Low Bush Blueberry (Vaccinium Angustifolium) New England Aster (Aster Novae-Angilae) Photo credit: Town of Franklin Planting area diameter: 8 ft Water Inlet (river stone channel) Coneflower (2) • Inkberry (1) • Iris (3) Photo credit: Town of Franklin Blueberry (5) Aster (6) ppp- W'v. Shawn S. Mayers 78 Whittier Road Jamestown, RI 02835 401.439.3763 shawnmayersC'grounds welldesrgns. cam www.groundswelldesigns.com