SWOT-Derived Canal Observability Confidence Levels for 22 Asian Countries

This dataset provides per-canal-segment observability confidence levels derived from SWOT Level-2 pixel cloud (PIXC) observations matched to the Global Registry of Agricultural Irrigation Network (GRAIN) dataset. The confidence level (CL) quantifies how reliably the SWOT satellite can observe water surface elevation (WSE) over individual irrigation canal segments across 22 Asian countries.Countries included: Afghanistan, Bangladesh, China, India, Indonesia, Iran, Japan, Kazakhstan, Kyrgyzstan, Malaysia-Singapore-Brunei, Mongolia, Myanmar, Nepal, North Korea, Pakistan, Philippines, South Korea, Sri Lanka, Tajikistan, Thailand, Turkmenistan, Vietnam. SWOT PIXC Version C data spanning 2024-01-01 to 2024-12-31 were processed. Only PIXC pixels classified as open water were used.