List of California reservoirs from wikipedia to geojson (example resulting geojson file: https://gist.github.com/swingley/25d2bb374a344958ac7d).

index.js

#!/usr/local/bin/node

var fs = require('fs');
var Xray = require('x-ray');
var xray = new Xray();
var turfPoint = require('turf-point');
var turfFeatureCollection = require('turf-featurecollection');

var wikiReservoirs = 'https://en.wikipedia.org/wiki/List_of_largest_reservoirs_of_California';
var reservoirs = {};
var out = 'california-reservoirs-wikipedia.geojson';

// Scrape reservoir info.
xray(wikiReservoirs, 'table.wikitable.sortable tr', [{
  name: 'td:nth-child(1)',
  county: 'td:nth-child(2)',
  coordinates: 'td:nth-child(3) span.geo-nondefault span span.geo',
  volumeAcreFeet: 'td:nth-child(4)',
  volumeKm: 'td:nth-child(5)',
  outflow: 'td:nth-child(6)',
  dam: 'td:nth-child(7)',
  image: 'td:nth-child(8) img@src'
}])(function(err, obj) {
  if ( err ) { console.log('xray error:  ' + err); return; }

  // Add numerical latitude and longitude properties.
  // Remove stuff like [12] and [n 4] since it's meaningless now.
  var features = obj.map(function(info, index) {
    for ( var prop in info ) {
      if ( prop === 'coordinates' ) {
        info.latitude = parseFloat(info[prop].split('; ')[0]);
        info.longitude = parseFloat(info[prop].split('; ')[1]);
      }
      info[prop] = info[prop].replace(/\[.*\]/g, '').replace('\n', ' ');
    }
    return turfPoint([info.longitude, info.latitude], info);
  });
  var featureCollection = turfFeatureCollection(features);

  fs.writeFile(out, JSON.stringify(featureCollection, null, 2), function(err) {
    if ( err ) { console.log('write failed', err); }
  });
});

https://gist.github.com/swingley/e05a6c8193c2a21ba304#file-index-js-L10
var reservoirs = {} is never used, right?