M46 REVERSE ENGINEERING RECONFIGURING THE CREEK-CAMPUS INTERFACE The Boneyard Creek surfaces from a buried culvert into the Engi neering Campus, its steep edges reinforced oy rockery, concrete, and steel. Its floodplains, parking lots and back alleys. Once a series
-- -=- of loosely linked wet prairies and marshes seeping into each oth ------ -- er, it has been transformed through a history of control; channel ized, widened, deepened, stra ightened, buried, and dammed. As the fields of design and engineering evolve and overlap, an opportunity arises for interdisciplinary collaboration on a project in Reverse En gineering on the Engineering Campus of the University of Illinois Urbana-Champaign. Operating at multiple site and time scales, this proposal explores both systemic and structural approaches to green infrastructural design on the UIUC Campus that not only improveS' the performance of flood and water qu'ality control, but builds q. highly productive, social, ecologic-al, and hyarological Interface be tween the Campus and Creek. I
WATERSHED: ENGINEERED ·------~ HARD SCAPE: STREETS HARDSCAPE: PARKING LOTS SOFTSCAPE r-----1 ROOFSCAPE SURFACE NETWORKS: ' I _..J I r Goal: 60% Bioinfiltration ' Goal: 100% Green Parking Perme Open Lawn with Trees - 0.27 sq mi ..,,,, f L--, • Green Roofs - 0.1 3 sqmi > 1 I I ( - LANDSCAPE INFRASTRUCTURES _ , I ~I" I • Irrigated Area - 0.36 sqmi CJ 600/oP ermeable Pavement I able Paving and/or Bioinfiltration • Rain Gardens/Native Vegetation A network of green infrastructure treets: 0.09 sq mi (8.7% SA) D I 0.21 (sqmi) I I~ : • Cistern Locations w City S I I Swales r _.'.Jc__, --, ' L--, Parking Lots: 0. 13 sq mi (11.4% SA) -, .Jr---J ____~~ .. .______L--, , Goal: 100% of Quad Irrigated by would mimic presettlement hy r 1 - --- - ----•--, ' I ' : I I -'ii, - ' I I !cc 'i ' ' . - Peak Flow Reduction: 16.7% drological conditions, providing L- -t ---""- -.I I I I 11 · I I a: '"'--- - L--., L ....1 - _.~ _ ..---= · ~ ----- ....__, .I I l~1 I I- eco-system services of groundwater I I r.£ 1,r . r---- ..__ I r-----" i\.•1-1.. I recharge through infiltration, water I I I ., ~ r I . I "'z quality control through biofiltration. I / "\. I Benefits would be pronounced in I ii CJ I i 1~~ 'I~ the Boneyard Creek, where infiltra r--, I r--, r--, I I" T I ' I I ! I : I _I I - ' I tion would stablilize base flow, bio I !<------ - w I I -"" . "' ,____ I c - - v~ - ~9;JL 11[2~1J 'u,.::;?ri.. ,i . - filtration would reduce BOD, and a I I - I c I i C..,.._'.:~s~ r . : reduction in runoff volume would I I I - I I I I O 2000 feet c I r I I j------i l ~ - ~~..;:.,;~%~-""II = - reduce peak flows. I 1000 I 0 25 so I I I , t I J z I 100 EB I I I . .., I I I L-----,.J I I I cC I I I I I : I ENGINEERED WATERSHED FILTERED FLOWS: " L ------=--- -=,.... - i!!!!!!J_ -J L------.J L .=-__.:: ------= - - - - ::I Detention Basin for Flood Control CAMPUS TO CREEK - PROCESS & PERFORMANCE Buried Creek "' 1. Stormwater Runoff PROCESS & PERFORMANCE PROCESS & PERFORMANCE PROCESS & PERFORMANCE 1. Stormwater Runoff from Roof 1. Stormwater Runoff 1. Stormwater Runoff 1. Stormwater Runoff Decorative Creek "'~ 2. Bioinfiltration via Native Planting 2. Storage in Cistern 2. Bioinfiltraiton: 2. Bioinfiltration 2.Bioinfiltration 3. Overflow into Storm Sewer 3. Irrigation ~·- Channelized Creek cC TN Removal: 8% z 4. Overflow into Storm Sewer/~e / " ·· ··--. __ ··~- .. •_ . - 4. Filtered Water into Creek TSS Removal: 2.5% ";;,<.:., FLOOD CONTROL WATER QUALITY CONTROL cC <2-Year Storm 100% lnfiltrat·.i·o... ~. //~ ...... 0 "- . h·--~ ~- -~--~~7 "' Boneyard Creek drains an urbanized watershed of ap HYBRID SYSTEMS: 3. 2-Year Storm Overflow ,.( ~'°' ~ w 4. Filtered Water to Creek .·.. .. cC proximately 7.45 sq. miles that flows, in up-stream to u SURFACE-SUBSURFACE z Runoff Volume Reduction: 17% &~ · 11;::: :::-: ~ ..@ ~~/?/ cC downstream order, through the city of Champaign, the ;f Designed for a 2-year 24hr storm, Peak Flow Reduction 36.0% '"'1F:)~ ;:'."'. · ,__ ....·).'~ campus ofthe University of Illinois at Urbana-Champaign, a: the network of green infrastructure @ ~ ';/. < :: :~~?®' c and the city of Urbana, Illinois. Over the past several de :::> will intercept the 'first flush', or the -. w ------::c cades, several detention ponds have been constructed first inch of rainfall which typically upstream of Campus Town and the UIUC Campus. De "' carries the most concentrated ur "'a: spite effectively eliminating recurrent flooding along "':::> ban runoff, laden with sediments, w the banks of the creek, the problem of poor water qual a. nutrients, heavy metals, organ !:;: ity persists. The Boneyard Creek listed on the EPA's 303d :E ic particles and other pollutants. list of impaired waterways, receives much of its base flow cC Storms greater than 2-year will lt r t 35: from urban runoff laden with nutrients, sediment, heavy u overflow into the subsurface storm ' '·' ' ' ., -- . . " ' , , . metals, hydrocarbons and other pollutants. sewer network. CAMPUS STREET AS BIOINFILTRATION INFRASTRUCTURE CAMPUS PARKING LOT AS BIOINFILTRATION INFRASTRUCTURE THE QUAD AS BIOINFILTRATION INFRASTRUCTURE RAINWATER HARVESTING FOR IRRIGATION OF QUAD