iMoMo: Innovative Low-Cost, High-Tech Water Monitoring

Low-cost monitoring via local involvement using novel high-tech technology has gained the attention in recent years. The iMoMo Global Initiative has developed, tested and deployed/operationalized different technologies to measure discharge in small rivers and canals. hydrosolutions GmbH has led this initiative jointly with HE-Arc and worked in Eastern Africa and Central Asia with local stakeholders to improve monitoring in an innovative and scalable way.

Critical Paucity of Key Data

In developing and transition countries and despite significant global investments in hydro-meteorology, data on water remain scarce/fragmented. One key reason is that traditional monitoring does not scale because of high investment costs and difficult operation and maintenance of traditional technology, esp. in remote and/or poor regions and because vandalism is an issue in many places. And even where there are sufficient data, these are often difficult to access and interpret for local stakeholders due to outdated data transmission and the lack of access to modern tools for data management, analysis, synthesis and exchange.
The collection of non-traditional data through local involvement using low-cost, high-tech devices (also referred to as crowd-sensing or crowd-based data collection) has emerged as an interesting pathway for obtaining more data in cases where needed. These non-traditional data can then complement data from in situ stations as well as from remote sensing.

Preparation of a site along a small irrigation canal for discharge measurements with the app in eastern Uganda (

The Swiss Agency for Development and Cooperation and the Global Programme Water there has recognized this early on and supported the Global iMoMo Initiative with the goal to foster innovation in this domain. Selected results and learnings from the multi-year, global effort are reported here.

New Technologies & Opportunities

In recent years, there have been substantial technology developments in environmental sensing and mobile communication technologies as well as web-based accounting. These enable the application and deployment of affordable and scalable high-tech solutions for better water management at different scales, from local up to transboundary levels.

Demonstrating the use of the mobile-phone based discharge measurement technology in the Bahir Dar Region, Ethiopia.

Especially on the side of data acquisition, low-cost, high-tech data collection through local involvement is increasingly recognized to be a powerful approach for increasing the availability of water data in domains and regions not covered so far by monitoring. As an example, the mobile Android-based app measures discharge in small to medium-sized rivers and channels using the smartphone camera and on the phone processing. Measurements are automatically synchronized with the web where they can be managed, analyzed and shared/exported, e.g. in a web-based digital irrigation scheme management system (see for example

New Challenges

Data collection through local involvement requires careful planning, including the definition of collection protocols and establishment of contractual relationships with local people involved and constant quality control and assurance.
Otherwise, stakeholders wishing to deploy these technologies run the risk of launching initiatives that neither generate desired outcomes in terms of the quality, frequency and reliability of data collected nor have a lasting, long-term impact beyond any projects' lifetime.


Read more at for a synthesis of key learnings and findings regarding these issues from the multi-year global iMoMo Initiative.


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