Himalayan Water Geochemistry from the Melamchi Valley, Nepal (2022-2025)

Geochemical data from springs, streams, and monsoonal rainwater samples collected in the Melamchi Valley catchment, Nepal, between 2022 and 2025. The dataset includes analysis of major ions, stable water isotopes, and Sr, Li, Si, and C isotopes to investigate chemical weathering. It was contributed by the British Geological Survey (BGS).

Use Cases

• Modeling chemical weathering rates along mountain flow paths based on major ion and isotope data.
• Analyzing seasonal variations in water chemistry based on bi-weekly time series samples from 5 sites.
• Investigating water source contributions and flow paths using stable water isotope and Sr/Li/Si/C isotope tracers.
• Comparing geochemical signatures between different water sources (springs, streams, rainwater) within a single catchment.

Strengths

• Multi-season data collection spanning from 2022 to 2025.
• Includes analysis of major ions, stable water isotopes, and four specific isotope systems (Sr, Li, Si, C).
• Bi-weekly time series sampling at 5 sites from 2023 to 2025 provides temporal resolution.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to the single Melamchi Valley catchment.

Provenance

Source

British Geological Survey (BGS)

Collection Method

Filtered water samples collected from springs, streams, and monsoonal rainwater across the Melamchi Valley catchment, with springs grouped into sub-linear transects.

Time Range

2022 - 2025

Freshness

Last updated 2026-04-09 08:34:23.082775; freshness should be verified.

Geography

Melamchi Valley catchment, Nepal