Water development resources

Find reports, plans, construction drawings and submission guidelines:

  • Stormwater management reports
  • Staged master drainage plans
  • Pond submissions
  • Construction drawings
  • Development site servicing plans
  • Geotechnical reports
  • Sanitary servicing studies
  • Erosion and sediment control plan reviews

This section also includes information on how to sign-up for and access our POSEIDONOnline and water ePay services online tools:

To find all water development approval submission information, including tools, guides, checklists and templates for each step in the development process, please visit water development resources.

POSEIDONOnline and City Online

POSEIDONOnline is the submission site for Stormwater Management Reports and Sanitary Servicing Studies.

To improve the customer’s experience, intake of Stormwater Management Reports (SWMRs) will be transitioned out of POSEIDONOnline to a new web tool. To support this transition, there will be interim changes to the submission and review processes.  The transition period is expected to occur from December 2025 to approximately Q2 2026, at which time we expect the new online submission process to be in place.

Please refer to the Stormwater Management Reports Guidelines and the How to Submit section of the Stormwater Report page on calgary.ca. The information was also provided in the December 2025  Industry Bulletin. For more information, visit POSEIDONOnline resources.

Note: Submissions for Sanitary Servicing Studies will continue to be made using POSEIDONOnline until further notice.          

Master drainage plans, staged master drainage plans, and stormwater management reports are available for purchase through City Online.

  • Established area linear levy pilot

    This three-year pilot offers an opportunity to receive reimbursement of construction costs for local water and sanitary upgrades that are triggered by development applications in the Established Area.

    Learn more

  • Stormwater & Housing Impacts Program

    Landowners, developers, and The City all work together to build homes and take care of stormwater. The Stormwater & Housing Impacts Project (SHIP) wants to create more houses and better stormwater systems.

    Learn more

Topics on this page

Plans, services and reports

  • Water ePay services

    Water resources will be using The City of Calgary's ePay service for service disconnection fees, redevelopment levy, DSSP inspection packages and services.

  • Stormwater management reports

    Find guidelines, checklists, and report submission requirements. See how to submit reports and view approved reports on CityOnline.

  • Staged master drainage plans

    Find guidelines and checklists for what to submit. See how to submit and view approved reports on City Online. For details, please see staged master drainage plans.

  • Pond submissions

    Find guidelines and view interim stormwater targets. View checklists and report templates for what to submit and how to submit. Find information on pond reports, inspections and ponds TCA.

  • Construction drawings

    Find guidelines for construction drawings and minor revisions. View checklists and spreadsheets for what to submit and how to submit. For more details, see Construction Drawings.

  • Development Site Servicing Plans (DSSP)

    Find guidelines for DSSP pre-requisites, co-requisites and small format. Learn more about how to make payments and the inspection process and requirements.

  • Geotechnical reports

    Find guidelines for geotechnical reports. See what to submit and how to to submit reports.

  • Sanitary servicing studies

    Find guidelines on sanitary servicing studies. See what to submit and how to suport, as well as how to inquire about report availability.

  • Erosion and sediment control plan reviews

    Find guildelines for ESC control plan reviews. See what to submit and how to submit a plan.

This information has no legal status and cannot be used as an official interpretation of the various bylaws, codes and regulations currently in effect. The City of Calgary accepts no responsibility to persons relying solely on this information. Web pages are updated periodically. ​

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