OpenFlows PondPack

Catchment Runoff Computations

For catchment runoff computations, you can add an unlimited number of user defined hydrographs throughout the watershed or choose from the following templates:

• SCS Runoff CN method
• Santa Barbara unit hydrograph
  User defined unit hydrograph
• Modified Rational Method
• Rational Q/Qp templates

Catchment infiltration losses can be computed using the SCS Method, the Green-Ampt equation, the Horton equation, or by entering a constant infiltration rate. You can calculate the time of concentration quickly and accurately, even when there are several possible flow paths to consider. PondPack offers you the choice of modeling infiltration from a pond to the surrounding soil using a constant flow rate, or rates that vary depending on the depth of water in the pond.

Interface and Graphical Editing

• Stand-alone Windows interface
• Runs in MicroStation (MicroStation license required), OpenRoads Designer (OpenRoads Designer license required), AutoCAD (AutoCAD and PondPack for AutoCAD required)
• Unlimited undo and redo
• Element morphing, splitting, and reconnection
• Automatic element labeling
• Scaled, schematic, and hybrid environments
• Element prototypes
• Dynamic zooming
• Aerial and Named view
• Image, CAD, and GIS background layer support

Model Building

• Single set of model files for four compatible platforms
• Bidrectional synchronized Shapefile, database, spreadsheet, and ODBC connections
• Polyline-to-pipe connections from DXF and DWG files
• Oracle Locator/Spatial data connections
• OpenRoads Designer import/export (pond elevation-volume data)
• GIS-ID property (maintain associations between records in source file and elements in a model)

Model Management

• Unlimited scenarios and alternatives
• Scenario management
• Active topology (activate or deactivate network elements)
• Tabular reports with global editing, sorting, and filtering
• Dynamic (query based) and static selection sets
• Element selection by polygon
• Element selection inversion
• Table opening on selection
• Engineering-units management
• Drawing review tools
• Automatic topology review
• Network navigator
• Orphaned node and dead-end pipe queries
• Hyperlinks for network elements
• User-data extensions
• ProjectWise integration (including engineering libraries)
• Customized engineering libraries for: conduit, curve number (CN), culvert inlet coefficient, rainfall curve, material, Q/Qp template, unit hydrograph, storage chamber, storm event, vortex valve, weir depth coefficient, weir submergence
• Import of PondPack V8 engineering library data (.plb) files • Import of PondPack V9 and V10 engineering library data (.plb) files
• Import of PondPack V10 data management center (*.plb) files
• Submodel import/export

Presentation of Results

• Report Builder: per element, all elements, index, summary
• Thematic mapping
• Dynamic, multi-parameter, and multi-scenario graphing
• Advanced tabular reporting with FlexTables
• Property-based color coding, annotation, and symbology
• DXF export
• Scaled print of network view

PondMaker: Pond Outlet Design

• Automatic update of worksheet containing design data for multiple design trials of a single pond
• Multiple pond designs possible
• Establishment of maximum outflow rates (pre-development or user defined flows)
• Post-development pond inflows computation
• Pond size requirements estimation
• Pond geometry design (grading plan or underground storage).
• Outlet structure design
• Pre- and post-development peak flow and volume comparison
• Hydrograph routing through ponds

Hydraulics and Calculators

• Underground detention chambers (including data from CULTEC)
• Vortex valves (including data from Hydro International)
• Calculators: first flush, estimated storage (overlay hydrographs), minimum drain time, estimate storage (rational method QPeak), estimated storage (peak flows), TR-55 tabular method, TR-55 graphical peak and storage, SCS CN volume
• Channel types: circular, rectangular, trapezoidal, parabolic, irregular
• Routing methods – For channels: modified Puls, Muskingum, translation. For ponds: level pond routing, interconnected ponds
• Outlet types: user-defined rating, culvert (box, circular), stand pipe, inlet box, circular orifice, orifice area, weir (rectangular, V-notched, irregular), vortex valve
• Water quality: first flush volume, minimum drain time, detention time estimation

Hydrology

• Unlimited number of return events, using SCS 24-hour Type I, IA, II, & II rainfall distributions, Bulletin 70 and 71 rainfall distribution data for the Midwest U.S., Gauged rainfall data, I-D-F curves
• Rainfall data input: dimensionless curves with total depth, time-depth curves, user-defined Intensity-Duration-Frequency (IDF) table, IDF curve equation
• Time of concentration methods: user-defined, Carter, Eagleson, Espey/Winslow, Federal Aviation Agency, Kerby/Hathaway, Kirpich (PA), Kirpich (TN), length and velocity, SCS lag, TR-55 sheet flow, TR-55 shallow concentrated flow, TR-55 channel flow
• Peak flow & hydrograph methods:SCS graphical peak discharge method, rational method, SCS unit hydrograph method, modified rational method, Santa Barbara urban hydrograph, user-defined unit hydrograph, user-defined hydrograph