Hydroism / Desktop engineering
Develop DEM-based catchments, estimate design runoff, review road crossings and prepare engineering deliverables—with the calculation basis kept in view.
Free installation. Engineering analysis requires a separately purchased Hydroism license.
01 / Workflows
Work from a road alignment, selected outlets or an area of interest. Keep terrain, hydrologic assumptions and review decisions connected.
Identify contributing catchments and candidate crossings along a road corridor.
Build an independent basin study around outlets or a selected area.
02 / Calculation & review
DEM-derived results form the calculation basis. Optional external comparisons help identify differences without silently replacing the terrain analysis.
Record the terrain, rainfall, outlets, methods and settings used for the study.
Progress tracks processing stages and available work counts. Valid results identify unresolved outlets and omitted outputs.
Inspect crossings, compare opening options and record notes or photographs. Technical changes require recomputation.
Engineering scope: hydrologic assessment and preliminary drainage screening. Opening checks do not replace detailed inlet/outlet-control analysis, flood modelling, structural design or project-specific approval.
03 / Deliverables
Provide a technical account of the findings alongside a detailed record of the model, its settings and outputs.
Computed findings, screening priorities, review decisions, limitations and recommended follow-up.
Editable DOCXRecorded inputs, selected methods, calculation settings and detailed results for technical checking.
Traceable recordOverall and individual-basin satellite and DEM-terrain plates. Unavailable sources are identified in the report.
Study & basin atlasGIS data, spreadsheets, hydrographs and charts, with Road and Watershed project files for later review.
GIS / Excel / CSVOnline mapping requires connectivity and the applicable data-service entitlement. Sources retain their attribution and usage terms.
Release 3.8.6
Responsive input and review layouts. Processing-stage progress. Clearer basin diagnostics. Separate technical and model reports. A Store package with the required calculation runtime included.
Read the current user guide04 / Commercial licensing
Every plan includes Road and Watershed analysis, engineering review and exports. Annual licenses are issued to registered computers.
Business
USD 399/ year
For an individual engineering workstation.
Request a quotationTeam
USD 999/ year
For a small design or project team.
Request a quotationOrganization
USD 2,499/ year
For engineering teams across one organization.
Request a quotationIntroductory annual prices. The quotation confirms the total payable, license dates, applicable charges and support scope. These are registered-device licenses, not floating licenses. No automatic renewal.
Get the Windows application from Microsoft Store.
Open Application → Manage license and download the .rdrequest file for each computer.
Email the request and chosen plan to Hydroism. Receive the quotation and payment instructions.
After purchase confirmation, import the supplied .rdlicense on the requesting computer and Windows account.
Installation is free. New engineering analyses and recomputation require a separately purchased Hydroism license. The Business, Team and Organization plans include the same Road and Watershed functions; the number of registered computers differs.
License import and validation work locally. Calculations using supported local or cached inputs can run offline. Online maps, terrain downloads and reference services require an internet connection.
Mapping access is supplied through the issued license when included in the agreed entitlement. The user does not need to paste a provider API key for that access. Availability depends on connectivity, provider coverage and credential validity; imagery is not an unlimited or perpetual entitlement.
The DEM remains the calculation basis. External comparisons are optional and kept separate. Differences are reported for review. Independently valid results remain available when other outlets are unresolved, with explicit omissions and causes. A critical input or calculation failure can still prevent an analysis.
Saved projects and calculated outputs remain readable and exportable, and report notes and photographs can still be updated. New analyses and engineering recomputation require renewal. Renewal is arranged by email; there is no automatic billing.
Contact Hydroism before changing the registered computer or Windows account. Device changes are handled manually. Removing a local license does not automatically release a seat or deactivate other copies.