A Scalable wAter Prognosis for RESERVOIRS

ASAP Reservoir is a tool for producing hydrodynamic and water quality forecasts for lakes and reservoirs. The tool is based on a coupled hydrodynamic-ecosystem model forced with a 16-day weather forecast. The tool can be linked to ASAP Rural to account for changes in inflow discharge and nutrient loads during the forecast window.

  • Reservoir forecasting made easy
  • A plug-and-play web-based solution
  • Simulate thermal stratification and water quality during a 16-day forecast.

The core concept of ASAP Reservoir is to automate all steps required for an operational hydrodynamic-ecological forecast for a reservoir or lake at any location in the world. The software workflow is designed around the state-of-the-art WET model (, and the globally available GFS 16-day forecast data (Global Forecast system). Adaptation to other forecast data sources can also be made upon request.

As a user of ASAP, you do not need to install any software, or make any customizations – you simply login to get access to your forecast site, which updates automatically, and you have the option to interact with the forecasts, e.g. for setting custom warning levels for temperature, algal levels etc. You can either provide an already existing WET case, which can readily be plugged into ASAP, or you can also ask our experts to set up a WET model for your chosen site.


Once a model is plugged into the ASAP Reservoir system, the following workflow can be completed:


  • Scan WET application and its location information.
  • Download and format local GFS weather forecast data.
  • Incorporate forecast data into WET weather inputs.
  • Optional: Import observation data from a sensor system installed in lake or reservoir, and change vertical profiles accordingly (e.g. for temperature) and prepare model hot-start based on this new data
  • Execute forecast run and send key results to web front-end.
  • Allow user-interactions through web front-end (e.g. custom warning levels for temperature, oxygen, algal levels etc.).

With ASAP Reservoir you can:

  • get important information about your lake or reservoir in real-time and for the coming days

  • improve your decision making to safegaurd your water resource

  • increase staff and public safety and awareness

  • use our phone app to reach your own end-users and enrich them with information about water, risks and activities in key recreational areas