i-TreeHydro
WaterResilientCi3esconference
April22,2016
RobbieCoville,
DaveyIns3tute&USDAForestService
TomTaggart
SUNYCollegeofEnvironmentalScienceandForestry
1.
2.
3.
4.
Outline
Intro to the tool; modeling & management
Briefing on background, inputs & outputs
Summary of 3 real-world applications
Additional resources & next steps
i-Tree is a
Cooperative
Initiative among
these partners
Whatisi-TreeHydro?
Eleva3on
High
Low
Simulateseffectsof:
Treecover
Imperviouscover
on:
Streamflow
Waterquality
i-Tree is a
Cooperative
Initiative among
these partners
Current vs. Management Scenario
Howcani-TreeHydroHelp?
Modeling&Management
Precipitation
Evapotranspiration
Interception
Throughfall
Runoff
Infiltration
Infiltration
i-Tree is a
Cooperative
Initiative among
these partners
i-TreeHydro
ModelBackground
Ø  Process-based,first-order
Rainfall-runoffmodel
Ø  Originsfromdiscussions
betweenDr.TedEndreny
(SUNY-ESF)andDr.DavidNowak
(USFS-NRS)
Ø  Wantedtoreplacecurvenumber
basedrunoffmodelswitha
processedbasedhydrological
model
i-Tree is a
Cooperative
Initiative among
these partners
St. Elizabeth Hosp. D.C. 2006-2011
Casey Trees
ModeledHydrologicProcesses
1  Inputs
a)  Location
b)  Weather
c)  Land Cover
d)  Topography
e)  Hydrology & Soil
2
3
4
5
6
7
8  Surface Evaporation
9  Veg Evaporation
10  Evapotranspiration
11  Subsurface Runoff
12  Semi-Spatial Distribution
13  Outputs
a)  Water quantity
b)  Water quality
Canopy Interception
Depression Storage
Impervious Runoff
Infiltration
Soil Moisture
Pervious Runoff
9
2
1
3
10
7
4
5
6
12
i-Tree is a
Cooperative
Initiative among
these partners
8
11
13
ModelInputs
Landcover
Ø 5maincoverclasses
•  BareSoil
•  Shrub/Grass/Herbaceous
(ShortVegeta3on)
•  ImperviousSurface
•  TreeCoveroverImpervious
Area
•  TreeCoveroverPervious
Area
i-Tree is a
Cooperative
Initiative among
these partners
i-Tree Canopy survey
for photo-interpretation of i-Tree Hydro’s land cover inputs
ModelCalibraBon
Calibra3on
Ø Method:
•  Determiningop3malmodelparameterset
⁻  Op3miza3onalgorithm-PEST
•  Repeatedmodelruns
Comparingpredictedandobservedvalues
•  Maximizegoodnessoffitmetrics
Ø Problems:
•  Equifinality–Differentparametersets,sameop3mum
•  Disagreementbetweenfielddataandmodelparameters
i-Tree is a
Cooperative
Initiative among
these partners
ModelCalibraBon
i-Tree is a
Cooperative
Initiative among
these partners
Outputs
WaterQuan3tyOutputs
Ø Predictedstreamflowvs.observed(ifavailable)
Ø Yearly,Monthly,Dailybar-graphs
Ø Hourly3me-series&Exportop3ons
Friday,August10,2012
Exported Figures from i-Tree Hydro’s Sample Project
i-Tree is a
Cooperative
Initiative among
these partners
Outputs
WaterQualityOutputs
Ø Pollu3on–Loadinges3mates
•  Totalpollutantmass
•  BasedonEMCvalues–fromEPA’sNURPdata
•  Availableinsameformatsaswaterquan3tyoutputs
i-Tree is a
Cooperative
Initiative among
these partners
ExportedOutputs
&ExamplesofAddiBonalProcessing
i-Tree is a
Cooperative
Initiative among
these partners
AddiBonalExamplesofi-TreeHydroModeling
SupporBngWaterResilientCiBes
“BriarlakeForestConversa1onProjectUsingi-TreeHydro”
byEricKuehleroftheUSDAForestService,2015
Ø  Successfulcommunityforestconserva3on
backedupbydatafromi-TreeHydro
“ModelingUrbanForestScenariosandHydrologyin
GrandRapids,Michigan”
byIanHanouofPlan-ItGeo,2015
Ø  Valueofurbanforestsreducingimperviousrunoff
“ModelingHydrologicalEcosystemServices
ofJuvenileTreesinWorcester,MassachuseKs”
byA.Filipovic&J.RoganofClarkUniversity,2016
Ø  Hydrologicimpactofdeforesta3onduetoALB&reforesta3on
Excerpt from Poster on Worcester, MA i-Tree Hydro Study
Formoreinfoontheseprojects,pleasevisit:
iTreeTools.org/Resources/Reports.php
i-Tree is a
Cooperative
Initiative among
these partners
TotalmonthlyflowsatBriarlakeForestunder
currentvsproposedlandcovers
OnlineResources
Download&moreinforma3on-itreetools.org
SupportForum-forums.itreetools.org
Ø FAQs-onSupportForum>Officiali-TreeFAQs>Hydro
Email–info@itreetools.org
UpcomingWorkshop
WEFTEC2016,full-dayhands-onworkshop
Ø September25inNewOrleans
SubscribeforUpdatesonEvents&Tools
Signupatitreetools.org/news/subscripBons.php
i-Tree is a
Cooperative
Initiative among
these partners