I am an independent researcher specialising in hydrological and climate risk analysis, with a focus on mountain watersheds in the western United States and Chinese mountain regions — the two areas in which my SRF-SEI framework has been validated. I have worked independently on this framework for over two years, developing the methodology, running all analyses, and publishing the results as a preprint.

Traditional hydrology answers the question "where does water come from?" through source partitioning methods such as isotope analysis and hydrological modeling. My framework answers a different question: how will the seasonal flow structure of a watershed change under warming, and is it approaching a state transition? This is a complementary perspective, not a replacement.

My method has been tested across 78 watersheds in the western United States and 14,406 grid points in Chinese mountains, with results detailed in my EarthArXiv preprint. Out-of-sample prediction results are statistically significant (r = -0.405, p = 0.014), as reported in the EarthArXiv preprint. The framework identifies four anchor types: snow anchor, mixed anchor, rain anchor, and hidden anchor. Each type responds differently to warming.

The framework has been validated for mountain watersheds in the western United States and Chinese mountain regions. For watersheds outside these two regions, I can use NASA POWER climate data, but streamflow and snow depth data availability may vary. Please message me with your watershed location before ordering, and I will confirm whether I can deliver a meaningful diagnosis.

I offer three services:

First, Single Watershed Quick Diagnosis. This includes the anchor type, SRF value, historical SEI trend, and a one-sentence conclusion, delivered as a 2-page PDF report within 3 business days.

Second, Single Watershed Full Diagnosis. This includes anchor type, SRF historical trend, SEI historical trend, winter snow depth trend, snowmelt peak date trend, four time-series figures, a plain-language conclusion, and actionable recommendations. Delivered as a 5-10 page PDF report within 5 business days. One round of revisions is included.

Third, Batch Watershed Screening. For 10 or more watersheds, I provide anchor types, SRF, SEI trends, a sensitivity ranking table, and full diagnostic reports for the top 3 highest-sensitivity watersheds. Pricing starts at $200 for 10 watersheds, plus $15 per additional watershed. Delivered as an Excel table and PDF reports within 10 business days.

To start, you only need to provide watershed coordinates (longitude/latitude range) or a USGS station ID. All streamflow, snow depth, and climate data are retrieved from public datasets: CNRD v1.0 Natural Runoff Dataset, China Long-Term Snow Depth Dataset, NASA POWER, and USGS National Water Information System. If you have local observations or published references, you are welcome to share them for cross-checking.

I work with clients in sectors such as consulting, planning, academic research, and water resource management. I provide pre-screening and sensitivity ranking, which complements traditional detailed hydrological modeling. I do not replace licensed hydrological survey institutions, and I do not provide legally valid hydrological survey reports.

I am committed to transparent methods and honest limitations. Every report includes full data sources, methodology notes, and a clear disclaimer about the scope and limitations of the analysis.

My preprint, "Snow-Dependence Modulates Warming-Induced Seasonal Extremization in Mountain Watersheds", is available on EarthArXiv (DOI pending). Once the DOI is assigned, I will update this profile with the live link so buyers can read the preprint directly. The full PDF is also available on my GitHub at

If your project involves mountain watersheds that need rapid climate sensitivity screening, send me your watershed coordinates via Zinn Hub message and I will respond within 24 hours.