Hydroinformatics Instruction Module Example Code: Sensor Data Quality Control with pyhydroqc

This resource contains Jupyter Notebooks with examples for conducting quality control post processing for in situ aquatic sensor data. The code uses the Python pyhydroqc package. The resource is part of set of materials for hydroinformatics and water data science instruction. Complete learning module materials are found in HydroLearn: Jones, A.S., Horsburgh, J.S., Bastidas Pacheco, C.J. (2022). Hydroinformatics and Water Data Science. HydroLearn. https://edx.hydrolearn.org/courses/course-v1:USU+CEE6110+2022/about.

This resources consists of 3 example notebooks and associated data files.

Notebooks:
1. Example 1: Import and plot data
2. Example 2: Perform rules-based quality control
3. Example 3: Perform model-based quality control (ARIMA)

Data files:
Data files are available for 6 aquatic sites in the Logan River Observatory. Each file contains data for one site for a single year. Each file corresponds to a single year of data. The files are named according to monitoring site (FranklinBasin, TonyGrove, WaterLab, MainStreet, Mendon, BlackSmithFork) and year. The files were sourced by querying the Logan River Observatory relational database, and equivalent data could be obtained from the LRO website or on HydroShare. Additional information on sites, variables, and methods can be found on the LRO website (http://lrodata.usu.edu/tsa/) or HydroShare (https://www.hydroshare.org/search/?q=logan%20river%20observatory). Each file has the same structure indexed with a datetime column (mountain standard time) with three columns corresponding to each variable. Variable abbreviations and units are:
- temp: water temperature, degrees C
- cond: specific conductance, μS/cm
- ph: pH, standard units
- do: dissolved oxygen, mg/L
- turb: turbidity, NTU
- stage: stage height, cm

For each variable, there are 3 columns:
- Raw data value measured by the sensor (column header is the variable abbreviation).
- Technician quality controlled (corrected) value (column header is the variable abbreviation appended with '_cor').
- Technician labels/qualifiers (column header is the variable abbreviation appended with '_qual').