EcoService Models Library (ESML)
Home
Search EMs
My
EMs 
Learn about
ESML
View ESML Data Maploading
EM: Visualizing Ecosystems for Land Management Assessments (VELMA) v2.0, Shayler Crossing watershed, Ohio, USA (EM-605)
View EM Runs
Collapse All
Expand All
- Export Data to Spreadsheet (Free Viewers)
- View Variable Relationship Diagram (PDF)(1 pp, 80 KB, About PDF)
EM Identity and Description
EM Identification
|
EM ID
em.detail.idHelp
?
|
EM-605 |
|
EM Short Name
em.detail.shortNameHelp
?
|
VELMA v2.0, Ohio, USA |
|
EM Full Name
em.detail.fullNameHelp
?
|
Visualizing Ecosystems for Land Management Assessments (VELMA) v2.0, Shayler Crossing watershed, Ohio, USA |
|
EM Source or Collection
em.detail.emSourceOrCollectionHelp
?
|
US EPA |
|
EM Source Document ID
|
359 ?Comment:Document #366 is a supporting document for this EM. McKane et al. 2014, VELMA Version 2.0 User Manual and Technical Documentation. |
|
Document Author
em.detail.documentAuthorHelp
?
|
Hoghooghi, N., H. E. Golden, B. P. Bledsoe, B. L. Barnhart, A. F. Brookes, K. S. Djang, J. J. Halama, R. B. McKane, C. T. Nietch, and P. P. Pettus |
|
Document Year
em.detail.documentYearHelp
?
|
2018 |
|
Document Title
em.detail.sourceIdHelp
?
|
Cumulative effects of low impact development on watershed hydrology in a mixed land-cover system |
|
Document Status
em.detail.statusCategoryHelp
?
|
Peer reviewed and published |
|
Comments on Status
em.detail.commentsOnStatusHelp
?
|
Published journal manuscript |
Software and Access
| https://www.epa.gov/water-research/visualizing-ecosystem-land-management-assessments-velma-model-20 | |
|
Contact Name
em.detail.contactNameHelp
?
|
Heather Golden |
|
Contact Address
|
National Exposure Research Laboratory, Office of Research and Development, US EPA, Cincinnati, OH 45268, USA |
|
Contact Email
|
Golden.Heather@epa.gov |
EM Description
|
Summary Description
em.detail.summaryDescriptionHelp
?
|
ABSTRACT: "Low Impact Development (LID) is an alternative to conventional urban stormwater management practices, which aims at mitigating the impacts of urbanization on water quantity and quality. Plot and local scale studies provide evidence of LID effectiveness; however, little is known about the overall watershed scale influence of LID practices. This is particularly true in watersheds with a land cover that is more diverse than that of urban or suburban classifications alone. We address this watershed-scale gap by assessing the effects of three common LID practices (rain gardens, permeable pavement, and riparian buffers) on the hydrology of a 0.94 km2 mixed land cover watershed. We used a spatially-explicit ecohydrological model, called Visualizing Ecosystems for Land Management Assessments (VELMA), to compare changes in watershed hydrologic responses before and after the implementation of LID practices. For the LID scenarios, we examined different spatial configurations, using 25%, 50%, 75% and 100% implementation extents, to convert sidewalks into rain gardens, and parking lots and driveways into permeable pavement. We further applied 20 m and 40 m riparian buffers along streams that were adjacent to agricultural land cover…" AUTHOR'S DESCRIPTION: "VELMA’s modeling domain is a three-dimensional matrix that includes information regarding surface topography, land use, and four soil layers. VELMA uses a distributed soil column framework to model the lateral and vertical movement of water and nutrients through the four soil layers. A soil water balance is solved for each layer. The soil column model is placed within a watershed framework to create a spatially distributed model applicable to watersheds (Figure 2, shown here with LID practices). Adjacent soil columns interact through down-gradient water transport. Water entering each pixel (via precipitation or flow from an adjacent pixel) can either first infiltrate into the implemented LID and the top soil layer, and then to the downslope pixel, or continue its downslope movement as the lateral surface flow. Surface and subsurface lateral flow are routed using a multiple flow direction method, as described in Abdelnour et al. [21]. A detailed description of the processes and equations can be found in McKane et al. [32], Abdelnour et al. [21], Abdelnour et al. [40]." |
|
Specific Policy or Decision Context Cited
em.detail.policyDecisionContextHelp
?
|
None identified |
|
Biophysical Context
|
The Shayler Crossing (SHC) watershed is a subwatershed of the East Fork Little Miami River Watershed in southwest Ohio, USA and falls within the Till Plains region of the Central Lowland physiographic province. The Till Plains region is a topographically young and extensive flat plain, with many areas remaining undissected by even the smallest stream. The bedrock is buried under a mantle of glacial drift 3–15 m thick. The Digital Elevation Model (DEM) has a maximum value of ~269 m (North American_1983 datum) within the watershed boundary (Figure 1). The soils are primarily the Avonburg and Rossmoyne series, with high silty clay loam content and poor to moderate infiltration. Average annual precipitation for the period, 1990 through 2011, was 1097.4 _ 173.5 mm. Average annual air temperature for the same period was 12 _C Mixed land cover suburban watershed. The primary land uses consist of 64.1% urban or developed area (including 37% lawn, 12% building, 6.5% street, 6.4% sidewalk, and 2.1% parking lot and driveway), 23% agriculture, and 13% deciduous forest. Total imperviousness covers approximately 27% of the watershed area. |
|
EM Scenario Drivers
em.detail.scenarioDriverHelp
?
|
Three types of Low Impact Development (LID) practices (rain gardens, permeable pavements, forested riparian buffers) applied a different conversion levels. |
EM Relationship to Other EMs or Applications
|
Method Only, Application of Method or Model Run
em.detail.methodOrAppHelp
?
|
Method + Application (multiple runs exist) View EM Runs |
|
New or Pre-existing EM?
em.detail.newOrExistHelp
?
|
New or revised model |
Related EMs (for example, other versions or derivations of this EM) described in ESML
em.detail.relatedEmHelp
?
|
Document ID for related EM
em.detail.relatedEmDocumentIdHelp
?
|
Doc-13 | Doc-366 |
|
EM ID for related EM
em.detail.relatedEmEmIdHelp
?
|
EM-375 | EM-377 | EM-378 | EM-884 | EM-883 | EM-887 |
EM Modeling Approach
EM Relationship to Time
|
EM Temporal Extent
em.detail.tempExtentHelp
?
|
Jan 1, 2009 to Dec 31, 2011 |
|
EM Time Dependence
em.detail.timeDependencyHelp
?
|
time-dependent |
|
EM Time Reference (Future/Past)
em.detail.futurePastHelp
?
|
past time |
|
EM Time Continuity
em.detail.continueDiscreteHelp
?
|
discrete |
|
EM Temporal Grain Size Value
em.detail.tempGrainSizeHelp
?
|
1 |
|
EM Temporal Grain Size Unit
em.detail.tempGrainSizeUnitHelp
?
|
Day |
EM Spatial Extent
|
Bounding Type
em.detail.boundingTypeHelp
?
|
Watershed/Catchment/HUC |
|
Spatial Extent Name
em.detail.extentNameHelp
?
|
Shayler Crossing watershed, a subwatershed of the East Fork Little Miami River Watershed |
|
Spatial Extent Area (Magnitude)
em.detail.extentAreaHelp
?
|
10-100 ha |
Spatial Distribution of Computations
|
EM Spatial Distribution
em.detail.distributeLumpHelp
?
|
spatially distributed (in at least some cases) |
|
Spatial Grain Type
em.detail.spGrainTypeHelp
?
|
area, for pixel or radial feature |
|
Spatial Grain Size
em.detail.spGrainSizeHelp
?
|
10m x 10m |
EM Structure and Computation Approach
|
EM Computational Approach
em.detail.emComputationalApproachHelp
?
|
Numeric |
|
EM Determinism
em.detail.deterStochHelp
?
|
deterministic |
|
Statistical Estimation of EM
em.detail.statisticalEstimationHelp
?
|
|
Model Checking Procedures Used
|
Model Calibration Reported?
em.detail.calibrationHelp
?
|
Yes |
|
Model Goodness of Fit Reported?
em.detail.goodnessFitHelp
?
|
Yes ?Comment:Goodness of fit for calibrated (2009-2010) and observed streamflow. |
|
Goodness of Fit (metric| value | unit)
em.detail.goodnessFitValuesHelp
?
|
None |
|
Model Operational Validation Reported?
em.detail.validationHelp
?
|
Yes |
|
Model Uncertainty Analysis Reported?
em.detail.uncertaintyAnalysisHelp
?
|
No |
|
Model Sensitivity Analysis Reported?
em.detail.sensAnalysisHelp
?
|
No |
|
Model Sensitivity Analysis Include Interactions?
em.detail.interactionConsiderHelp
?
|
Not applicable |
EM Locations, Environments, Ecology
Location of EM Application
Terrestrial location (Classification hierarchy: Continent > Country > U.S. State [United States only])
em.detail.relationToSpaceTerrestrialHelp
?
|
Marine location (Classification hierarchy: Realm > Region > Province > Ecoregion)
em.detail.relationToSpaceMarineHelp
?
| None |
Centroid Lat/Long (Decimal Degree)
|
Centroid Latitude
em.detail.ddLatHelp
?
|
39.19 |
|
Centroid Longitude
em.detail.ddLongHelp
?
|
-84.29 |
|
Centroid Datum
em.detail.datumHelp
?
|
WGS84 |
|
Centroid Coordinates Status
em.detail.coordinateStatusHelp
?
|
Provided |
Environments and Scales Modeled
|
EM Environmental Sub-Class
em.detail.emEnvironmentalSubclassHelp
?
|
Rivers and Streams | Ground Water | Forests | Agroecosystems | Created Greenspace |
|
Specific Environment Type
em.detail.specificEnvTypeHelp
?
|
Mixed land cover suburban watershed |
|
EM Ecological Scale
em.detail.ecoScaleHelp
?
|
Ecological scale is finer than that of the Environmental Sub-class |
Scale and taxa of organisms modeled
Scale of differentiation of organisms modeled
em.detail.nameOfOrgsOrGroupsHelp
?
|
EM Organismal Scale
em.detail.orgScaleHelp
?
|
Not applicable |
Taxonomic level and name of organisms or groups identified
taxonomyHelp
?
| None Available |
EnviroAtlas URL
em.detail.enviroAtlasURLHelp
?
| Average Annual Precipitation, Average Annual Daily Potential Wind Energy |
EM Ecosystem Goods and Services (EGS) potentially modeled, by classification system
CICES v 4.3 - Common International Classification of Ecosystem Services (Section > Division > Group > Class)
em.detail.cicesHelp
?
|
(Environmental Subclass > Ecological End-Product (EEP) > EEP Subclass > EEP Modifier)
fegs2Help
?
|
EM Variable Names (and Units)
Predictor
em.detail.variablesPredictorHelp
?
Intermediate
Response
em.detail.variablesResponseHelp
?
|
Observed Response Variables (and Units)
view details (1 variable)
em.detail.observedResponseHelp
?
|
|
|
Computed Response Variables (and Units)
view details (5 variables)
em.detail.computedResponseHelp
?
|