User:BubbaJuice/ArizonaLanduseReservoirProject

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Summary

On this page you will see they procedure and progress of my project where I wish to eradicate the tag landuse=reservoir and nodes containing water=reservoir from the state of Arizona.

New Resources

I am using a few resources that make this project possible.

  • USGS GNIS
  • US Topo Maps
  • USGS 3D Elevation Program
  • Bing Maps
  • Ersi Clarity
  • JOSM
  • Continuous Download JOSM Plugin
  • Map Roulette

Old Resources

I am using a few resources that make this project possible.

New Procedure

In this project I am doing this by hand with no use of bot edits.

First I choose where I would like to edit by finding a task on MapRoulette.

I open the task in JOSM and first try to identify if the reservoir is in the correct location. If it is in the correct location I will continue onto the next step. If it is in the wrong location I try to identify it by first looking through the surrounding area with a USGS Topo Map. If I still can't find it I try checking Bing and Ersi Clarity for any water features that might be represented by the node. If I still can't find it I check the USGS 3D Elevation Program for any terrain that might indicate a reservoir. (dam, dropoff in canyon, etc.) As a final resort I will quarry for the GNIS id and check its coordinates in the database. If none of these methods prevail I delete the node and move onto the next task.

Next I will try and map the reservoir at a certain water level. Sometimes I have to get imaginative when tracing the outline of the reservoir. If there is a NHD body of water there I will modify it to my liking to make it correctly mapped.

Once I have traced the outline of the reservoir I will combine the tags of the node with the closed way. I will also add natural=water, water=reservoir, and intermittent=yes. My general rule of thumb is if the reservoir is not maintained by some government organization (National Forests, State Parks) and has no constant flow of water filling it then I will tag it as intermittent. If it does fill one of these criteria then I will likely tag it as not being intermittent.

Old Procedure

In this project I am doing this by hand with no use of bot edits.

To start off a changeset I first download data from Overpass turbo via JOSM. I use the query:

try it yourself in overpass-turbo
[out:json][timeout:2500];
{{geocodeArea:"Arizona"}}->.a;
nwr["landuse"="reservoir"](area.a);
(._;>;);
out skel qt;

I next select the objects that I will edit in that changeset and add them to the todo list via the TODO List plugin.

I finally cycle through the list of all the nodes/areas/relations manually and add appropriate tagging for each feature.

In the above step I first position the node/area/relation correctly. Many of the nodes with landuse=reservoir are imported from USGS GNIS and do not have correct positioning. I find positioning by first looking at Bing. If the imagery is bad I use Mapbox Satellite which has similar quality. If there is no obvious reservoir within close proximity of the node I check US Topo Maps for the possible location of the reservoir. If I still do not find the reservoir I look up its USGS GNIS code using the query feature. If I do not find a valid code I delete the node. If I find a valid node I see if it matches up with the node on OSM. I then check the coordinates of where it claims the reservoir is. If the location is not correct I remove landuse=reservoir from the node and move on.

Progress

Here is the link where you can view the live progress of the project through the view of the OSM database. https://overpass-turbo.eu/s/13Yi

Below will be an unordered bulleted list of all the changeset links that have been a part of this project.

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