downloading 24k maps and city navigator

[+jules6679]

Does anyone know of any sites where you can download 24k maps and city navigator for free. I have been to the gpsfiledepot.com but the only maps they have are the 100k and I already have that.

[snowfleurys]

Garmin's 24k topo and CN are copyrighted products. It would be illegal to make official Garmin products available in such a manner.

Read the descriptions for each mapset on gpsfiledepot - most of the State maps are near 24k quality/scale - however that might be defined.

What area(s) are you interested in?

[+jules6679]

Garmin's 24k topo and CN are copyrighted products. It would be illegal to make official Garmin products available in such a manner.

Read the descriptions for each mapset on gpsfiledepot - most of the State maps are near 24k quality/scale - however that might be defined.

What area(s) are you interested in?

 

I downloaded the maps for Pennsylvania and New York from gpsfiledepot, but its the same as the 100k topo map I already have downloaded on my gps.

[snowfleurys]

Garmin's 24k topo and CN are copyrighted products. It would be illegal to make official Garmin products available in such a manner.

Read the descriptions for each mapset on gpsfiledepot - most of the State maps are near 24k quality/scale - however that might be defined.

What area(s) are you interested in?

 

I downloaded the maps for Pennsylvania and New York from gpsfiledepot, but its the same as the 100k topo map I already have downloaded on my gps.

 

As far as I am aware, there is no 100k mapset on gpsfiledepot. Do you mean Garmin's 100k map product download from them?

 

What is the same? Contours, hydro, roads, POIs.

 

The USGS printed 100ks use a CI of 10 or 20 meters in PA & NY; the 24ks use 10 & 20 feet (and some 5ft, 10m & 20m in NY) - the PA & NY mapsets at gpsfiledepot use 10 and 20 feet.

[snowfleurys]

From your post, the 100k is on the GPSr, but are the NY & PA mapsets?

If they are, the Garmin product will take presidence in display. You would have to hide/disable it to see the data in the NY & PA mapsets.

[+Entropy512]

The NY and PA map sets definately are higher resolution than the 100k Garmin datasets.

 

However: I'd suggest the Northeast Topo map sets, as they seem to have more detailed hydro data.

[snowfleurys]

The NY and PA map sets definately are higher resolution than the 100k Garmin datasets.

 

However: I'd suggest the Northeast Topo map sets, as they seem to have more detailed hydro data.

 

Correct on resolution and correct on hydro detail.

 

The NY & PA mapsets used hydro from Census (which appears to be a cross between better than 100k and NHD 24k - slowly migrating to NHD 24k). NE topo used NHD 24k (which nationwide has a number of issues).

 

The map author of NE topo used a 20' contour interval for all 48 States; whereas the printed USGS topo quads are about 20% at 40' or 80', 30% at 20', and 50% at 10' or 5'. He also used elevation grid points at 30m spacing, while everyone else is using source data with a 10m spacing.

 

Take your pick on which might be better for your purposes.