If You Clean It They Will Come! Field of Dreams Watershed
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IFIF YOUYOU CLEAN CLEAN IT, IT, THEY THEY WILL WILL COME! COME! FIELD OF DREAMS WATERSHED StreamFIELD Restoration, OF StormwaterDREAMS Wetlands, WATERSHED and a Vision for Change! STREAM RESTORATION, STORMWATER WETLANDS, AND A VISION FOR CHANGE! AT A GLANCE By Judith E. Joyce, Senior Geomorphologist, Impact7G Ǥ ǡ ǡ The City of Dyersville, home of the Field of Dreams movie ǡ site, is leading efforts to improve the water quality of its article ǡat a glance streams while providing economic development opportunities ǡ ǡ throughout the watershed. In 2017 the City began extensive The City of Dyersville, home of Field of Dreams movie community-wide planning, with the Dyersville Comprehensive site, is leading efforts to improve the water quality of Plan and Dyersville Downtown Plan. OutreachǤ ʹͲͳ efforts its streams while providing economic development identified citizens’ concerns Ǧwith flooding, ǡ water quality and Ǥ ǡ opportunities. The vision plan unites public, rural, and recreational opportunities along the Bear Creek and the North ǡdowntown private partners with the mantra “If you Fork Maquoketa River. Ǥ citizens’ clean the“If water, you they clean will the come”! water, they will ǡ come”! Like much of Iowa, conversion of land from prairie to The confluence of funding for water quality practices, agricultural land over the past 200 years has caused major Ǥ brownfield redevelopment, and stream restoration, stream degradation—negatively impacting water quality, provides the framework needed to throw the first pitch wildlife habitat, ǡ recreation, and putting infrastructure at risk. ǡby addressing water quality ǡ concerns and improve To energize fans of the creek and to rally community support, ʹͲͲ ǡriver access. Homerun benefit include welcoming a vision for the “Field of Dreams Watershed” was developed. — ǡ aesthetics, providing wild places to recreate, enjoying The vision plan unites public and private partners with the a brew, and/or unplugging and connecting with nature!ǡ ǡ mantra “If you clean the water, they will come”! Ǥ Ǥ 22 IGWAǡ UnderGround | Summer 2020 ǡ ǡ Ȁ Ǩ “If you clean the water, they will come”! support, a vision for the “Field of Dreams Watershed” was developed. Field of Dreams Watershed Field of Dreams Watershed The “Field of Dreams” Watershed comprises the headwaters of the North Fork Maquoketa River (HUC 10 0706000608) and encompasses the City of Dyersville and the City of The “Field of Dreams” Watershed comprises the Cascade, Iowa. Within the watershed, reaches of Bear Creek, Hewitt Creek and the North Fork Maquoketa River ȋ ͳͲ ͲͲͲͲͲͲͺȌ “If you clean the water, they will come”! are included on the Iowa Department of support, a vision for the “Field of Dreams Watershed” was developed. Natural Resources Impaired Waters List. ǡ Ǥ ǡ ǡField of Dreams Watershed Dyersville’s geography is defined by its rivers and streams. The North Fork of the Maquoketa River meanders through the downtown area and meets up Ǥ The “Field of Dreams” Watershed comprises the with Bear creek at their confluence in Westside Park. ȋ ͳͲ ͲͲͲͲͲͲͺȌ ǡ Ǥ Recent redevelopment of the downtown ’s ǡ ǡ riverfront embraces the river, allowing Ǥ people to once again “get close” to the river will add more aesthetic appeal and Ǥ attraction to downtown. ’s The planning process identified the Ǥ Ǥ need to preserve vital natural areas to reduce flooding impacts, provide natural IF YOU CLEAN IT, THEY WILL COME! stormwater drainage, protect plant and Ǥ animal habitats, increase property value IF YOU CLEAN IT, THEY WILL ǡ COME! for nearby development, and enhance FIELD OF DREAMS WATERSHED and connect the park system. Over the once again “get close” to the river will add more ǡ years, the City has acquired flood prone Stream Restoration, Stormwater Wetlands, Ǥ and a Vision for Change! once again “get close” to the river will add more houses and land and converted it to FIELD OF DREAMS WATERSHED Ǥ park/open spaces. STREAM RESTORATION, STORMWATER WETLANDS, AND A VISION FOR CHANGE! (continued on page 24) By Judith E. Joyce, AT Senior A GLANCE Geomorphologist, Impact7G ǡ ǡ Figure 1: Field of Dreams Watershed (a.k.a. North Fork of the Maquoketa River - HUC 100706000608). Ǥ ǡǡ ǡ ǡ FigureFIGURE 1: 1:Field Field ofof Dreams ǡ Watershed Watershed (a.k.a. North Fork of the Maquoketa River(a.k.a. - HUC North 100706000608) Fork of the ǡMaquoketa. River HUC 100706000608) Microsoft ǡ Ǥ ǡ ǡ ǡ ǡ ǡ Ȁ Ǥ ǡ Ǥ Ǥ ʹͲͳ ǡ Ǧ ǡ Title Ǥ ǡ Ȁ Ǥ ǡ Ǥ citizens’ “If you clean the water, they will ǡ come”! Ǥ Primary Business Address Address Line 2 ǡ Address Line 3 ǡ ǡ Address Line 4 ʹͲͲ ǡ — ǡ Phone: 555-555-5555 Fax: 555-555-5555 ǡ ǡ Figure 2: Flood Hazard Map for downtown Dyersville. Email: Ǥ FIGURE 2: Flood Hazard Map for downtown Dyersville [email protected] Ǥ ǡ ǡ www.igwa.org 23 ǡ Ȁ Ǩ Figure 2: Flood Hazard Map for downtown Dyersville. FIGUREFigure 3 3:: Local Local kids kids floating floating Bear Bear Creek Creek encounter encounter part Impact7G'spart Impact7G’s stream stream team :team Megan : MeganDown (Geologist)Down (Geologist) and Jeromy and PribilJeromy (Geologist) Pribil (Geologist). (continued from page 23) The Bear Creek Restoration: Westside Park (Upper): Lead Off HitterThe Bear Creek Restoration: Westside Park (Upper): Lead Off Hitter In the batting lineup, the leadoff of Bear Creek. The confluence of River Restoration Toolbox. practice features stream restoration this outside the box funding (SRF Impact7G assessed nearly 2,500 along Bear Creek. Like many Midwest Sponsored Project) along with the Linear Feet (LF) of Bear Creek and urban streams, reaches are degraded, implementation of the Iowa DNR determined that nearly 1,600 LF entrenched, and are ǡ disconnected River Restoration Toolbox (IRRT) of stream could Ǥbe restored to help from their historic floodplains ǡ provided ǡ the framework ǡ (https://www. improve water quality. Restoration with relatively low-valued riparian Ǧ Ǥiowadnr.gov/Environmental-Protection/ practices include creating inner- vegetation dominated by highly Water-Quality/River-Restoration/ streambank ǡ benches; creating oxbow invasive species. These degraded River-Restoration-Toolbox) needed to wetlands; placing structures to ǡstream systems ǡ strike out due to poor Ǥthrow the first pitch by addressing control the stream ǡ grade; realign ǡ and water quality caused by excessive water quality concerns and improve define the channel;Ǧ create habitat; loading of sediment, nutrients, Ǥriver access to bring the community restoring native streambank; restoring bacteria, and thermal pollution. ǡ back to the water. Having an industryǨ floodplain vegetation; and lowering the Restoration systematically modifies standard, like the IRRT, associated bottom culvert elevation of the most the physical, chemical, and biological with some professional qualifications downstream portion of the project, in conditions to create an ecosystem has resulted in a higher level of order to facilitate sediment transport. trajectory toward a higher-functioning ȋ Ȍ assessment and better designs Impact7G is working with Ǥ the City natural ecological processes and allowingȋ Ȍ the reviewer to be more of Dyersville to make the restored services. Homerun community comfortable with stream restoration ȋ Ȍ as stream to improve recreation along ȋbenefitsǣȀȀǤǤȀ include welcoming aesthetics a water qualityǦ Ȁ practice. ǦȀthe creekǦȀ by installing natural-lookingǦ that provides Ǧwild placesȌ to recreate, stone crossings and incorporating the unplug and connect with nature! The City teamed up with Impact7G existing multi-use trail into the project Ǥ ǡ ǡRecent construction of a wastewater and IIW with Impact7G leading the design. Construction is scheduled for treatment facility has allowed the City stream assessment and restoration the Fall of 2020. to capture funding from the State design. Note, this was the first SRF Ǥ Revolving Fund (SRF) to improve Sponsored project to utilize the Iowa (continued on page 26) water quality through the restoration Department of Natural Resources 24 IGWA UnderGround | Summer 2020 PROJECT OUTCOMES • Utilizes SRF dollars to improve water quality by stabilizing streambanks, aerating the water, effectively moving sediment, reducing water temperature, and removing pollutants. • Streambank stabilization helps protect City utilities and infrastructure, as well as prevents adjacent property owners from losing land due to channel migration. • Serves as a natural space functioning as a stream and wetland complex, offering a way for residents to interact with and enjoy nature. FIGURE 4: Before photos along Bear Creek. Note, Rip rap banks from toe to top of bank, bank collapse and invasive plants (Japanese Knotweed) STREAM RESTORATION PRACTICES Figure 3: Local kids floating Bear Creek encounter part Impact7G's stream team: Megan Down (Geologist) and Jeromy Pribil (Geologist). The Bear Creek Restoration: Westside Park (Upper): Lead Off Hitter ǡ Ǥ FIGURE 5: Sills FIGURE 6: Dry Bottom Oxbow FIGURE 7: Naturalized banks, riffle, and liner deflector ǡ ǡ ǡ Ǧ