Recent diary entries
Riverbanks have been added to the Platte River all the way from North Platte, Nebraska to the Missouri River. From North Platte, the South Platte has banks to Chatfield Dam south of Denver, and the North Platte through Wyoming and into Colorado.
There is still some mapping remaining to do; tributaries can be added, nearby roads detailed, etc. Also there is some inconsistent tagging that probably should be edited (e.g. line->water in some cases instead of area->riverbank). And some of the past mapping could not have foreseen the recent flooding that has altered islands and shorelines.
But, overall, the Platte River mapping has helped improve the map in Nebraska, Wyoming and Colorado.
Bing imagery shows a major traffic jam on northbound US-287 south of Laramie. So, I just added a bridge to the map over the UPRR tracks. Hopefully, this should allow traffic to being moving again!
...as well as some other nearby ways near Torrington, WY; including US-26. So, I guess I'll use the working Potlatch to take care of those issues.
I have added river banks and islands along the South Platte from Chatfield Dam, south of Denver, to the Nebraska/Colorado line. I must confess that I got distracted along the way and reclassified and aligned some nearby highways and railways along the way.
Interestingly, some of the imagery has been updated since I started and some of the river banks are considerably different from those I first mapped. It looks like the more recent images may have been gathered during a period of high water and the older pictures during a drought.
Oh well, back to Potlatch for some remapping...
I've been working the South Platte. Added river banks from Chatfield Dam (south of Denver) to east of Greeley. Someday, I'll get to Nebraska, and maybe meet whoever is adding the banks upstream from the Missouri. Also, there's a newly-opened stretch of the South Platte River trail along the east bank of the river through Littleton. Biked and GPXed this stretch; it's not yet in Bing imagery but is now in OSM!
While the car was being serviced, I walked the Streets of Southglenn with GPS in hand. This is a relatively new outdoor retail, mxed-use area that has replaced the aging Southglenn Mall. The mall still appears on the Bing imagery.
Using imperfectly-located GPS traces and waypoints uploaded to OSM and copious notes, I'm attempting to map this new development.
It will be interesting to see how my results compare with future imagery that may show the area.
After adding bridges and riverbanks to the Colorado River, I flew back to Denver and noticed what appears to be and extraterrestrial visitor in the Bing imagery between Tape Drive and Disk Drive in Broomfield. This morning, I see the OSM map has confirmed his presence.
Look now; I'm sure he'll be gone by this evening (Colorado time). Try viewing in Potlatch 2 with imagery and zoom 18 or 19.
I find the bing imagery much improved over the previous base. Aside from scale, the big difference in the imagery is seasonal. Snow cover and long dark shadows in the older photos made many areas appear to be black or white, and properly locating roads, let alone trails, was nearly impossible without some GPS assistance.
I'm currently updating the Gunnison and San Isabel National Forests using Potlatch 2 and memories from trips through the area. Also double-checking tags with the aid of government maps. Even US government maps do not always agree with each other, so I will not modify the tiger_review tags without further ground verification.
I took advantage of yesterday's warm weather to ride and track a new portion of the Douglas County East West Regional Trail. I headed westward from the Dad Clark Trail south of Mountain Vista H.S. to where the E-W Trail joins the Spring Gulch Trail.
This mostly downhill run was scenic and fun! The dirt trail has a lot of curves, hills and moguls; but it's not really technically challenging (at least not at my speed).
With the GPS still recording, I also mapped a new leg of Plaza Drive (not entirely on the aerial photos yet) from Ericksson Blvd to Lucent. And the Highline Canal Trail has been realigned a bit in this area.
Of course, the ride between my house and the trail heads was uphill and against the wind in both directions.
Working on suburban Denver retail areas just in time for last minute shoppers.
I have been updating motorways, bike paths and everything in between around Denver, CO. Among other things I have noticed and tried to correct:
TIGER street data: Topology and nodes seem to be generally correct. However, curved streets often appear as diagonal lines slicing through fields, houses, etc. Some streets change names upon crossing another, and the TIGER data often misses this. Away from Denver, there are many streets that are badly displaced or do not exist at all. I'm correcting these using the Yahoo photos and changing the tiger:review tag to aerial and then deleting that field as I bike or drive through those locales and verify the configurations.
HIGHWAYS: The differences between primary-secondary, secondary-tertiary and tertiary-residential designations might well be arguable. However, there are some obvious discrepencies between the map and ground truth that I'm working on. E.g., a portion of Deer Creek Road is designated as a primary route. Although bicyclists who fight traffic in this canyon might disagree, I believe it should be designated tertiary or secondary at best.
I have changed US-285 between N. Turkey Creek and Sheridan to a trunk route from a combination of primary/motorway as it is not completely limited access, but the major intersections do have grade separtions.
There are people-years worth of work left to do around here, so feel free to join the fun.