HydroSOS Implementation Phase
Implementation Progress
Different implementation stages are ongoing informally and formally in many regions across the globe, since the end of end-of-year 2021. The six WMO Regional Associations, through their hydrological bodies, prepared HydroSOS Regional Implementation Plans that were endorsed during WMO Meteorological Congress 19 (Cg-19).
HydroSOS has developed methodologies for creating streamflow, groundwater, and soil moisture status products. Countries use those methodologies to share their standarized products to the HydroSOS portal. The HydroSOS suggested categories are as follow:
| Category | Percentile range | Suggested colour for visualisation (RGB / HEX) |
| High flow | Q ≥ 0.9 | RGB: 44/125/205 HEX: #2C7DCD |
| Above normal | 0.75 < Q < 0.9 | RGB: 142/206/238 HEX: #8ECEEE |
| Normal range | ≤ 0.25 Q ≤ 0.75 | RGB: 231/226/188 HEX: #E7E2BC |
| Below normal | 0.1 < Q < 0.25 | RGB: 255/168/133 HEX: #FFA885 |
| Low flow | Q ≤ 0.1 | RGB: 205/35/63 HEX: #CD233F |
Information related to each region/sub-region is available under the following links:
- RA I - HydroSOS in Africa
- RA II - HydroSOS in South and Southeast Asia
- RA III - HydroSOS in South America
- RA IV - HydroSOS in North America, Central America, and the Caribbean
- RA V - HydroSOS in the Pacific
- RA VI - HydroSOS in Europe
WMO is currently working together with Member countries (14 in RA I, 7 in RA II, 12 in RA III, 21 in RA IV, 8 in RA V, 5 in RA VI) on inception/implementation activities for HydroSOS under different projects, support to global activities, and developing project proposals.
Technical Development Team
As part of the implementation progress, members from the HydroSOS Technical Development Team gather virtually and face-to-face to discuss the way to technically support he implementation of HydroSOS around the world, and to identify and develop data products and standards for the system requirements.
