hydrocomp

hydrocomp is an project that contains python modules that compare timeseries output from a model of a particular parameter (i.e. discharge) with an observed timeseries of the same parameter and compute differences and statitics between modeled and observed hydrologic parameters. For example, the model timeseries can be a rainfall-runoff model output of estimated discharge and the observed timeseries can be an USGS NWIS data file that contains discharge as a hydrologic parameter.

Old (~2013), but cool project being archived.

Documentation

https://ky.water.usgs.gov/usgs/projects/jlant_program_code/hydrocomp/html/index.html

Features

The following are the statistics calculated:

• Nash-Sutcliffe

• R Squared Coefficient

• Mean Squared Error

• Absolute Error

• Relative Error

• Percent Error

• Percent Difference

hydrocomp.py is a module that contains functions to calculate, print, and plot comparision data and statitics.

In the hydrocomp.py module, main() prompts user for observed and model files. Processes each file, prints information, and plots data and statistics. Information is printed to the screen. Plots are saved to a directory called 'figs' which is created in the same directory as the data file. Currently, if an NWIS data file is selected as the observed file a log file called 'nwis_error.log' is created if any errors are found in the data file.

nwis.py is a module that contains functions to read, print, and plot data from an USGS NWIS data file. The NWIS data file can be either a daily or instantaneous data file. The data file can contain any number of parameters; i.e. discharge, gage height, temperature, sediement concentration, etc.

USGS NWIS data files can be found at:

http://waterdata.usgs.gov/nwis/rt

statistics.py is a module that contains functions to calculate all the statistics.

helpers.py is a module that currently contains functions to subset dates and find common date ranges between the model and observed data files.

water.py is a module that reads output from an application called WATER (gui wrapper around a Kentucky modified version of the rainfall-runoff model called Topmodel.

Authors

Jeremiah Lant [email protected]

DATE

07/18/2013