On October 3rd, the Leitrim task within the #osmIRL_buildings project was finished, i.e. mapped to 100% (8% validated). It had been re-opened around August 1st (we don’t exactly remember, but the ohsome.org statistics suggest that date).

In the West of the county, Bing seemed to be the best and most up-to-date satellite imagery, whereas in the East, mostly Esri World Imagery (Clarity) Beta and Maxar were used.

Huge big thanks go out to everyone who contributed (in alphabetical order):

᚛ᚐᚋᚐᚅᚇᚐ᚜ 🏳️‍🌈
Boggedy
b-unicycling
DeBigC
dónal
NoelB
Ser195

Some numbers to show what we achieved (data retrieved using https://ohsome.org/apps/dashboard/):

Buildings

In total, 37,900 new buildings were added with the following tags in order:

building typenumbergrowth rate
yes18500475 %
house10600936 %
farm_auxiliary407214529 %
garage12653720 %
ruins431
school253*
terrace32
church1
other2746
Break-down of building types added
*This number is curiously high with the official number of schools only being about 50, but it could include disused school buildings – which we cannot tell from satellite view – or several buildings on one school ground.
Distribution of building types as mapped in Co. Leitrim

Roads/ highways

There were 998km of roads added, broken down into

highway=track178
highway=path72.3
highway=service449
other298.7
Break-down of highway types added

Landuse

Landuse is usually part of the tasks. The following shows how many sqkm of the landuse were added:

landuse=forest8km2
landuse=commercial2.83km2
landuse=residential2.1km2

Waterways

Waterways are usually not part of the tasks, but some people add them anyway (numbers in km):

waterway (total)109 km
waterway=stream53 km
waterway=river*44 km
Breakdown of new waterways
*some streams were also re-classified as rivers in the process according to the OSM classification (i.e. cannot be jumped by a fit adult).

Other features added in the process

Ringfort 318

Power pole 600

This project was fully validated in April 2023 details here.


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