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HydroCAD® Stormwater Modeling - Since 1986

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We strongly recommend that everyone run the tutorial that is offered when you start HydroCAD.  You can also run the tutorial by selecting Tutorial on the HydroCAD Help menu.  The tutorial is loaded with important tips and techniques you'll use all the time. Answers to most questions can be found by using the context-sensitive "Help" button on every HydroCAD screen.  A complete Owner's Manual is also available in PDF or printed format.
Are you using the latest HydroCAD-10 release?  To check your version and read about update options, select Check for Update on the HydroCAD Help menu. Would you like to discuss your question with other HydroCAD users?  Visit our public support forum on Eng-Tips.com

Please select from the many support documents listed below, or search for a specific topic.  
  1. General Support Documents
    1. How to use the HydroCAD CD Reference Library
    2. Frequently Asked Questions
    3. Release notes for HydroCAD-10 HydroCAD 9.1  HydroCAD 9.0  HydroCAD 8.5  HydroCAD 8.0  HydroCAD 7.1  HydroCAD 7.0   HydroCAD 6.1
    4. General Tips (A Tip-of-the-month compilation)
    5. Units of Measure (Rounding, English, Metric, & custom units)
    6. Sending Projects by Email
    7. HydroCAD Licensing and Registration
    8. HydroCAD Training, including live seminars and self-training materials.
    9. Where is my version and serial number?
    10. Message list 
    11. Software Status Bulletins
    12. International use
  2. Installation and Operation
    1. Hardware and System Requirements
    2. Download Links
    3. Download Tips
    4. Installation tips
    5. Startup Problems
    6. License Pooling
    7. Windows Printing Tips
    8. Exporting Data
    9. Importing Data
    10. HydroCAD File Types
    11. File Compatibility (between different versions)
    12. Understanding the Capacity of Your System
    13. Using a Link to Model a Large Watershed
    14. Multi-event links: How they work
    15. Data Exchange 
    16. HydroCAD command-line options
    17. Metered (hourly) HydroCAD use
    18. CAD data import
    19. File Sharing
  3. Modeling Issues
    1. How do I model my site?
    2. Overfilled Pond Storage
    3. Inflow Area and Depth
    4. Common Runoff Issues
    5. Rainfall Issues  Rainfall Central 
    6. Using local precipitation frequency data with HydroCAD
    7. Unit Hydrograph selection and the Peak Factor
    8. Using the Rational Method    IDF Files
    9. Analyzing the "First Inch"
    10. Modeling a Roof or Roof Drains
    11. Runoff, Inflow, or Outflow Lower Than Expected
    12. Results not as expected
    13. Results different from other software
    14. Outlet Device Calculations
    15. How Do I Add Two Hydrographs?
    16. Modeling an Elliptical or Arch Pipe
    17. Pond storage calculations & embedded storage
    18. Using stormwater storage chambers
    19. Understanding Exfiltration (for dry wells, infiltration, etc.)
    20. Catch basins & storm sewers
    21. Pipes & culverts
    22. Modeling a progressive dam breach
    23. Automatic pipe and culvert sizing
    24. Tailwater, Backwater, Coupled Ponds, & Pressure Flow
    25. Using the new Dynamic Storage-Indication Method
    26. Using the simultaneous routing procedure
    27. Agency Acceptance of HydroCAD (Local, state, and federal issues.)
    28. Comparison with TR-20 and TR-55
    29. Automatic TR-20 data import
    30. Swamp effects and the TR-55 Pond/Swamp Factor
    31. Modeling overland flow
    32. Using the Pond Sizing report
    33. Subcatchment FAQ
    34. Reach FAQ
    35. Pond FAQ
    36. Link FAQ
    37. Modeling Vortex Control Valves
    38. Modeling Pumps
    39. Detention time calculations
    40. Understanding the Peak Flow
    41. Curve Number issues
    42. Soils Information
    43. Time-of-Concentration
    44. Muskingum-Cunge Reach Routing
    45. Pervious/impervious runoff issues
    46. Modeling a dam break
    47. Modeling check-dams
    48. Comparing hydrographs (including pre/post conditions)
    49. Modeling rain gardens
    50. Modeling porous pavement
    51. Weir calculations
    52. Modeling a floating outlet device
    53. Land-uses analysis and pollutant loading
    54. Underground storage (chamber) wizard
    55. New chamber definitions
    56. Flow diversions
    57. Modeling off-line storage 
    58. How to resolve oscillations 
  4. Modeling Examples (With photos!)
    1. Sample Pond #1: Earth detention pond with riser outlet
    2. Sample Pond #2: Flood control pond with concrete control structure
    3. Sample Pond #3: U-shaped detention pond with concrete riser
    4. Sample Culvert #1: Inlet control in action
    5. Sample Weir #1: Sharp crested vs. broad crested weirs
    6. Sample Weir #2: Modeling compound weirs with the weir rise parameter
    7. Sample Site #1: A project with no natural outlets
  5. For Further Assistance
    1. Visit the Hydrology Library
    2. Search Entire Web Site For Key Words
    3. HydroCAD Forum on eng-tips.com
    4. Submit a Question To Technical Support (If you can't find the answer above.)
    5. Suggest a New Program Feature
    6. Subscribe to Our Mailing List (Get free Support Letters and other news.)
    7. Premium Support Plans (Toll-free modeling advice, automatic program updates, etc.)
    8. Interim Release Software    Early Release Software

 

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