Table 2. Data requirements.

Study area	Istanbul, Düzce, Tekirdağ, Kırklareli
Study boundaries	Each province’s provincial boundaries (Tekirdağ and Kırklareli as one region)
Inter-basin water transfers (IBTs)	Melen Watershed (Düzce) Istranca Streams [Istrancalar, Kazandere, and Pabuçdere] (Tekirdağ and Kırklareli)
Timeline*	Melen: 2008–2023 Istranca Streams: 2000–2023
Timestep	1 year
Data sources	Provincial Environmental Status Reports, ISKI Annual Reports, TUIK Regional Statistics, DSI, TESKI

Notes.

^*2023 values are used in place of 2024 because the 2024 data is not available.