ChemLotUS: A Benchmark Dataset of Lotic Chemistry across US River Networks

ChemLotUS contains water quality information in rivers and streams carefully curated and linked to a high resolution stream network. The dataset covers the contiguous United States (CONUS) with nearly 35 million records in about 290,000 sites. 11 water constituents are included so far: Calcium (Ca), Electrical Conductivity (EC), pH, Total Suspended Solids (TSS), Turbidity (Tu), Total Organic Carbon (TOC), Dissolved Oxygen (DO), Chlorophyll a (Chl-a), Nitrate (NO3), Soluble Reactive P (SRP), and Total P (TP). Raw water quality data comes from the Water Quality Portal (WQP - https://www.waterqualitydata.us/), and network information comes from the National Hydrography Dataset High Resolution (NHD-HR - https://www.usgs.gov/national-hydrography/nhdplus-high-resolution).

This repository contains the data, as well as the code developed to obtain it, according to the Readme1 file.
The Readme2 file contains the definitions of the columns contained in each csv.

The difference with the previous version of this repository is that we followed recommendations by the reviewers of the associated paper. Therefore, this version is recommended over the previous one.

More details about the dataset are explained in the research paper with the same name "ChemLotUS: A Benchmark Dataset of Lotic Chemistry across US River Networks", of which the first revision was reurned to peer review after following reviewer's recommendations.