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Data and Code for the Virtual Wells Imputation framework


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Created: Mar 11, 2024 at 10:11 a.m.
Last updated: Mar 19, 2024 at 3:39 p.m.
DOI: 10.4211/hs.fa6840cb376f4311af2bb5f52724ce7c
Citation: See how to cite this resource
Content types: Single File Content  Geographic Feature Content 
Sharing Status: Published
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Abstract

This resource includes the dataset and Matlab code corresponding to the manuscript titled "An Imputation Method for Simulating 3D Well Screen Locations from Limited Regional Well Log Data".

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
North Latitude
40.6708°
East Longitude
-118.5893°
South Latitude
34.9067°
West Longitude
-122.6391°

Temporal

Start Date:
End Date:

Content

Readme.md

Overview

This repository contains the data, code and links to material related to our GWAT-2023-03-0054 paper.

Dataset

The data set that was used in our paper contains the Irrigation and public supply wells. The well data used in the study were accessed in 2018. The spreadsheet CVwellData.csv contains the following fields:

  • WCRNumber: Well completion Report identification number
  • lat: Latitude in WGS 84
  • lon: Longitude in WGS 84
  • top: Distance between Ground surface and top of the well perforation [ft]
  • bot: Distance between Ground surface and bottom of the well perforation [ft]
  • depth: Total Drilled depth [ft]
  • Q: Well yield [gpm]
  • type: Type of well. Only Agricultural or public supply are included
  • Year: THe year that the well was constructed
  • MethodofDeterminationLL: How accurate the coordinates are. if the value is Derived from TRS then the accuracy is half mile

Script

The code is written in matlab. The script Well_Imputation.mlx contains an example on how to pre process the data, how to calculate the empirical Probability Distribution Functions using Radial Basis functions and how to use the PDFs to impute the missing data. This is a live script and to access it Matlab. Neverthelss we provide a view of the script in the following link Well_Imputation.mlx.

In the script we use the function VWGA_calc_2D_PDF which is part of our gwtools repository.

## Spatial data Central Valley is split into 21 water balance subregions. We apply the imputation algorithm for each of the 21 subregions separately. Inside the folder Subregions we provide the shapefile that we use to split CV into the subregions

Data Services

The following web services are available for data contained in this resource. Geospatial Feature and Raster data are made available via Open Geospatial Consortium Web Services. The provided links can be copied and pasted into GIS software to access these data. Multidimensional NetCDF data are made available via a THREDDS Data Server using remote data access protocols such as OPeNDAP. Other data services may be made available in the future to support additional data types.

Credits

Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
California State Water Resources Control Board 19-051-250
USDA NRCS NR183A750023C005

How to Cite

Kourakos, G., R. Pauloo, T. Harter (2024). Data and Code for the Virtual Wells Imputation framework, HydroShare, https://doi.org/10.4211/hs.fa6840cb376f4311af2bb5f52724ce7c

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
CC-BY

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