Questions tagged [united-states]

Use this tag for Questions which are specific to the country of the United States of America (USA), Do not use for United States Virgin Islands (VIR)

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5
votes
3answers
3k views

Seeking location of all Universities and Colleges in North America?

This seems fairly straightforward but I'm having trouble finding the right data. All I need is the name, address, and lat long of all universities and colleges in North America. I've come across a ...
20
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5answers
20k views

Finding footprint data for US buildings?

Are there any sources for free and distributable building footprint datasets for major cities around the United States? Ideally, the data would also have the number of stories of each building; is ...
1
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1answer
75 views

Where can I find the official data of all cities in the United States?

I would like to see a list of all U.S. cities and have them categorized by states. Is there any authority web link I can follow? I searched on Google but the list is limited. I want to have a full ...
2
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2answers
26 views

What are TRW or TRE formatted locations?

I have data from a U.S. state and for each item, there is a Location ID in the format T##R##E-## Sometimes the E is a W. What is this format?
1
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1answer
73 views

What coordinate system/projection are these Fresno, CA data points? [duplicate]

I have some shapefiles which include various points and a corresponding street address, whose lat/lon I've manually found in Google Maps. There is no .prj file. Google Maps Lat,Lon, unknown ...
1
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1answer
28 views

Is there a United States waterbody index number available?

In searching for this, I see that in some countries they have a waterbody index number, a unique ID for each water body. Does such a system exist in the US and is it available online or from any ...
3
votes
2answers
93 views

Trying To Identify The System That Coordinates Belong To

I have architectural drawings of a bus terminal in Rochester, NY done in 1974 that lists the coordinates of the corners of each building. But I don't recognize the system of these coordinates. For ...
2
votes
4answers
3k views

Looking for Employment Density Data: Employees per unit of area by industry by county (USA)

What I'm looking for something like this: http://www.bls.gov/cew/ew07fig20.pdf For those that can't see it, the second page of the PDF has a map of Employment density within manufacturing by county, ...
0
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1answer
59 views

Use of US Census data to plot house value range

The house value data from the US Census Bureau is provided as a table differentiating areas into census tracts. My understanding is that they categorize each tract into quantities of homes fitting ...
10
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2answers
3k views

What is the source of horizontal and vertical striping in USGS DEMs?

When processing 30m and 10m DEM data downloaded through the National Map Viewer from the National Elevation Dataset, we noticed horizontal and vertical striping not only in the produced results, but ...
3
votes
2answers
303 views

GIS data on Lewis & Clark expedition?

I'm looking for historians' best estimate of the location of the Lewis & Clark expedition at each date during the trip, in a machine-readable format (e.g. that I could use in a GIS system). (...
4
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2answers
711 views

Seeking Alabama GIS Clearinghouses?

Alabama's data portal (portal.gsa.state.al.us) is down and I haven't come across any other GIS clearinghouses for AL that are as good as say, Florida's FGDL. Does anyone know of a decent GIS ...
5
votes
1answer
6k views

Does anyone know what a geoid10 and its numbers mean?

I am doing home for my GIS class where we had to download census data from our county and to define what geoid10 and its numbers mean. I cannot find the definition anywhere.
8
votes
1answer
3k views

Are there duplicate Zip codes in the US?

I am testing a solution for a tax calculation system, and some states have zip code ranges with specific taxes, so I need to know if there are zip codes that correspond to different locations. One ...
1
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0answers
273 views

Looking for a shapefile of the US Southwest Border Sectors [duplicate]

I'm looking for a shapefile similar to the following image: I'd just like the outlines of the sectors. I'm only concentrating on the southwest border which is San Diego all the way to Rio Grande ...
2
votes
1answer
941 views

Mapping Longitude and Latitude to US state

Is there any database (Gov data or private) or web service that map Longitude and Latitude to US state? I have the specific Longitude and Latitude of a location and would want to identify the state ...
0
votes
1answer
48 views

Displaying USNG Coordinates in ArcMap?

I need to display points in ArcMap using a spreadsheet with United States National Grid (USNG) Coordinates. I have previously done it with Lat/Longs where I convert the spreadsheet to a table, right-...
0
votes
1answer
380 views

Find Mapping of Place Codes to County Codes

I have two datasets with columns described below: A list of all "place" names derived from here (US Census): And this one, a list of county FIPS codes, also derived from the US Census (here) I ...
1
vote
0answers
120 views

What projection should be used along Gulf Coast?

What projection should I use along the Gulf coast - spanning the west coast of Texas to the Florida panhandle. I need to perform spatial analysis for a data-set along the coast. I see a similar ...
0
votes
0answers
111 views

Seeking tool to geocode USA addresses?

I have a 6000 USA addresses in form: Address, City, State and ZIP . I want to geocode these addresses. I have tried to use QGIS MMQGIS plugin with geocode tool using Google services, but I have got ...
1
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0answers
29 views

Where Can I find US Roads? “OverWeight Trucking Business” [closed]

I tried OSM, Google Maps, TIGER Database... But there's nothing like how the permits of the OverWeight Trucks roads are issued. Any idea about this?
-2
votes
1answer
165 views

Seeking shapefile of all Hawaiian volcanoes?

I have downloaded a shapefile of volcanoes all over the world, but when zoomed in to Hawaii, not all of the volcanoes are displayed. I have been searching but I can't seem to find a shapefile of all ...
2
votes
1answer
399 views

Albers Conic versus State Plane Zone in terms of accuracy?

I'm trying to determine if an Albers Conic (Alaska Albers) is suitable as a projection for a corridor 800 miles long by 50 miles wide, that goes from the north coast of Alaska to the south coast. ...
1
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0answers
112 views

Is there an equal area basemap for the Alaska region of North America?

I am looking to apply an equal area basemap to my data. Although I do not receive an error when applying the data in the same arcmap document, the data is being spaced in an undesirable fashion. The ...
1
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0answers
41 views

Choosing projection for distance calculations in Alaska?

I am working within the entire state of Alaska and slightly into western Canada, and I need a projection which will allow me to accurately calculate distances between points within the state. ...
2
votes
3answers
587 views

Row-crop field boundaries

I'm on the hunt for field boundary coordinates in the US in the form of GeoJSON, a Shapefile or any structured format that I can use to overlay on a map. I've tried looking at the US Department of ...
3
votes
3answers
242 views

Working around US Census site blocking of IP addresses?

I'm downloading TIGER data from the census site for the TIGER geocoder, but the computers IP has been blocked. I'm trying the following now: Generate the loader script on the target machine. Copy ...
5
votes
5answers
2k views

How do I locate cities or town polygon shapefiles?

Does anyone know of a reliable source where to download city/town polygon shapefiles? I'm specifically looking for NY and NJ. I have come across point shapefiles, but not polygon. For example in NY ...
1
vote
1answer
528 views

Using Baltimore City Survey Control System?

A client has provided some surveyed points referenced to the "BALTIMORE CITY SURVEY CONTROL SYSTEM", they're all projected and given in easting/northing numbers. I need to reconcile them with some GPS ...
2
votes
1answer
1k views

Converting coordinates in Florida, USA?

I have an point location and the information given is: Easting: 519122.06 Northing: 1290630.07 Original thought was it's UTM, but does not appear to be correct because I know the point needs to be ...
2
votes
1answer
4k views

ArcGIS WGS84 Web Mercator Vs. WGS84 UTM zone 15N: Very different distance dimensions [closed]

I am working in ArgGIS 10.1 with a field (raster layer in tif format) in which I have placed two points (.shp layer). I have two versions of both layers, resulting four layers: one tif+shp set in CRS ...
1
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0answers
47 views

Finding equivalent API-supported data to the 2000 Census

I'm having some difficulty choosing Census datasets for a project that involve various SES measures at the block-group level. I'll be looking at things like median household income and percentage of ...
0
votes
1answer
145 views

Using USGS data in 3ds max/ps/vue etc

I'd like to use USGS data in other software to produce 3d terrains. Ideally I would use IMG format as its most common from what I see. But how can I convert it to a 32 bit exr format for usage as ...
2
votes
3answers
314 views

Using one CRS for an entire US state?

I am working on a GIS project for Virginia and the data spans the entire state. There are two CRS available VA North (FIPS 4501) and VA South (FIPS 4502). Is it possible to use just one of those CRS ...
0
votes
2answers
49 views

snow data for US

I'm an amateur to weather. I'm trying to find a snow data set for my weather impact sales project. I need daily snow depth and snow total for different region or states. I found this : http://nsidc....
1
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0answers
19 views

Is it possible to get specific Asian population totals from the Census at the Block or Block Group level?

I know you can get it at the Tract level but I can't for the life of me find it at at a lower level. I can find totals for just "Asian" at these levels but I want it to be more specific than that (e.g....
4
votes
2answers
151 views

Determining accessibility of U.S. street address

I'd like to determine whether a given U.S. street address is publicly accessible to vehicle/foot traffic. This would include addresses on both publicly and privately maintained roads that are not ...
2
votes
1answer
2k views

How do I from convert from street level address to block/block group/census track?

I just downloaded block-level census data, using this answer Where to get 2010 Census Block data? It output a spreadsheet with a bunch of rows of the format GEO.id | GEO.id2 | ...
1
vote
0answers
92 views

Obtaining population estimates by ZCTA from American Fact Finder

I would like to obtain the most recent population estimates (and age and gender information if possible) at the ZIP Code Tabulation Area (ZCTA) level. I think this data exists on the American Fact ...
0
votes
1answer
173 views

National Land Cover Dataset (USA) Data Extraction

I have downloaded the NLCD 2011. It has different formats of files (i.e. .rrd, .ige). I tried to open the (.rrd) file using ArcGIS 10.5.1 but it couldn't open it. Can you suggest me how can I view ...
2
votes
2answers
483 views

Routing Service that Avoids Areas?

I'm just starting with GIS, and I'm looking for a routing service that will allow me to avoid given regions on a map, or to build my own router that has this functionality. The site OpenRouteService....
1
vote
1answer
100 views

Looking for the census blocks that make up the most recent U.S. Congressional Districts

I am hoping someone can help me solve this or point me in a direction. I need to know what census blocks make up the most recent Congressional Districts (115th). I have found a file that the US Census ...
1
vote
2answers
8k views

Plotting US maps with selected locations (longitude and latitude of locations are known) in R?

I've been struggling with the following R plotting of the US map and wonder if any of you have suggestions on how the plot should be done. Here is what I have tried: US <- map("state",fill=TRUE, ...
4
votes
2answers
119 views

Getting 8 digit watersheds for USA

Is there an alternative source for 8-digit (vector shapefiles) US watersheds? The USDA link is down and they are not responsive to my query for getting the data: https://gdg.sc.egov.usda.gov/
5
votes
2answers
917 views

Soil maps - displaying specific soil types QGIS

I'm trying to isolate a couple specific soil types from the GIS soils layers for a county in my state in the US. I downloaded the data: ftp://ftp.igsb.uiowa.edu/gis_library/Counties/Adair/soil_01/...
-1
votes
1answer
588 views

Locating and adding state layers to a QGIS map

If I wanted to add layers for a state (Indiana) in a program like QGIS so I could produce several maps (Infrastructure, Water Resources, Mineral Resources, and HAZMAT concerns), how would I locate and ...
1
vote
2answers
1k views

Is there a county-level maps dataset that includes independent cities in virginia?

The following code shows the dataset I am working with: library(maps) CountyMapData <- map_data("county") head(CountyMapData) long lat group order region subregion 1 -86.50517 32....
1
vote
1answer
44 views

What does “Place of Work only” mean in terms of US census ACS geographical restrictions on a dataset?

I'm trying to get data on commute methods for an area using American Community Survey 2015 table B08505A, but as you can see in this table describing geographic restrictions for ACS data: https://www2....
0
votes
0answers
66 views

How does the US Census Bureau simplify its Cartographic Boundary Shapefiles?

The US Census Cartographic Boundary Shapefiles are available in 1:500,000 and 1:5,000,000 and 1:20,000,000 resolutions. The boundaries are well-aligned and the data otherwise seemingly clean. How ...
1
vote
1answer
1k views

2010 census population data by block groups for Florida

I would like to map population density by block group for the state of Florida, but I'm having a hard time trying to locate the correct data on the Census website. I know I'll probably have to ...