Aerial view of Sungai Wain Forest Reserve in East Kalimantan on the island of Borneo, Indonesia

© Ahmad Fuadi/TNC

Call for Proposals Window

N4W’s 6th Call for Proposals will open soon to advance water security across the globe. We aim to partner with local champions seeking to ideate and develop Nature-based Solutions (NbS) at Landscape Scale, to address water scarcity, flooding, and water quality issues. Winning applicants receive in-kind technical assistance from our N4W team to support program preparation and capacity-building. Typical applicants include utilities, river basin organizations, and water sector consortia. 

N4W selection criteria focus on opportunities where we think our team can provide the greatest value, to help organizations transform ideas into implementation-ready NbS at landscape scale.

  1. Are you a river basin organization, government agency or utility managing bulk water resources or addressing flood risks? 
  2. Are you, or do you have a local lead fluent in English and/or Spanish?
  3. Are you looking for technical assistance to further develop your NbS Program at the landscape scale? 

Then you should keep reading


Application Process:
The application process will begin with a Call for Ideas, a short application designed to be completed in a few hours. Submissions will undergo a Rapid Screening to identify the 20 most promising ideas. Shortlisted applicants will then advance to the next phase, where they will submit a Detailed Proposal.


 

 

Resources for Applicants:

To help applicants navigate the process, N4W will provide: 

  • Introductory Webinar: Scheduled for September 30th, 2026. The recording will be made available on this website. Register here
  • Call for Ideas Application Form: High-level template, with top 20 applications receiving invitation to develop Detailed Proposal. 
  • Detailed Proposal Form: More detailed template required for applicants to submit full proposal 

You can read more about eligibility requirements and the evaluation criteria on our N4W Call for Proposals Fact Sheet [English | Spanish]


Stay Connected: 

To be notified when the next Call for Proposals opens, you can sign up below. For any further questions, feel free to reach out at cfp@nature4water.org.


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Birch forest, close up on trunks

© Mikhail Kapychka/TNC