Caution Updated:

  • New! City-wide Stage 4 outdoor water restrictions are in effect and indoor water conservation is needed while crews connect the new Bearspaw South Feeder Main to the existing water system. Learn more about water restrictions

On this page you can find:

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.

Related sites

Area contact maps

To contact a water resources development approval engineer or engineering technologist for your project's location, please use the map below

For outline plans, stormwater management reports, or sanitary servicing studies contact the area engineer.

For development permits, development site servicing plans, or construction drawings contact the area technologist.

Development Engineering – Utility Specialists contact map

POSEIDONOnline and City Online

POSEIDONOnline via VISTA 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. 

Please refer to the Stormwater Management Reports Guidelines. 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.

Plans, services and reports

Related projects

  • 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.

  • Stormwater Incentive Program

    Landowners, developers, and The City all work together to build homes and take care of stormwater. The Stormwater Incentive Program (SIP) wants to create more houses and better stormwater systems.


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. ​