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)

Filter by
Sorted by
Tagged with
0
votes
1answer
32 views

Replicating standard D3.js Conical US Albers projection in QGIS?

Oftentimes, when I see maps of the US rendered online, they use a custom version of the Albers projection, like so: Alaska and Hawaii are off to the side, nicely arranged. I'd like to replicate this ...
2
votes
1answer
807 views

Using US Census block group data field names for feature classes?

I may be missing something here, but it seems like getting usable US Census data into a shapefile or feature class is much harder than it used to be. Downloading the Tiger block group shapefiles is no ...
0
votes
0answers
22 views

Seeking high resolution real-color (RGB imagery) dataset?

Specifically interested in the the South Florida region, USA. The aim is to pull up high quality aerials to detect manholes and wellheads from space! These things can typically be half a foot to a ...
0
votes
1answer
18 views

Translating one raster's contents closer to another’s with each at different scales using QGIS?

I'm working with multiple raster images, each in the Albers Equal Area Conic projection: one of the mainland US, one of Alaska, and one of Hawaii. I'd like to translate the Hawaii layer to be closer ...
-1
votes
1answer
2k views

Seeking GIS data about NYC's combined sewers (CSO) that's free to use? [closed]

I've located two sites that display the data that I'm looking for, but both lack exporting functions. OASIS NYC and maps.nyc/gov Otherwise I can't locate this data anywhere in a format I can use in ...
0
votes
2answers
79 views

Seeking historic aerials for some areas in Dona Ana County, New Mexico?

How do I find several historic aerials from the mid-1970's or early 1980's and where can I download them? I would like them to be free of charge.
5
votes
1answer
113 views

What level of error expected when using NAD StatePlane CRS from adjacent state?

I am adding Georgia data to my GIS database and, unlike the California data I've added, have decided to use my existing EPSG:3361 (South Carolina StatePlane) coordinate reference system for ...
1
vote
1answer
33 views

Projecting as USA_Contiguous_Albers_Equal_Area_Conic_USGS in QGIS?

Is it possible to project EPSG: 6350 (NAD83 (2011)) as WKID: 102039 (USA_Contiguous_Albers_Equal_Area_Conic_USGS) in QGIS? There is no EPSG code and I'm unsure how to create a custom CRS.
-1
votes
0answers
29 views

Getting updated list of US Zip Code with latitude and longitude?

I have the old list of US Zip Codes which is missing some of the zip codes. How can I get the Updated list of Zip Codes in CSV format?
9
votes
1answer
624 views

OpenStreetMaps offline tile packs

Is there a place where I could download OpenStreetMaps tile packs for the united states? I would like to have offline access for the whole country.
0
votes
1answer
107 views

Looking for an Elko County Nevada Land Ownership Shapefile

I am looking for a Nevada Land Ownership shapefile. County and state GIS don't seem to have anything beyond pdf. Are there any public or commercial avenues to acquire land ownership in Nevada? I'...
0
votes
1answer
145 views

Looking for a complete list of cities by state, with area code

Our company is working on moving our sales assignments from area codes to ZIP codes, and we need some kind of dataset to help move existing assignments to the new system. Does anyone here know where ...
1
vote
1answer
731 views

COUNTY WebService API lookup from valid street address

I am looking for a solid WebService API that will allow me to submit an http request with a pre-validated US Street/City?state/Zip Address and return COUNTY in xml or json about 200 times per work day....
1
vote
1answer
143 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
1answer
60 views

Adjusting Alaska and Hawai in d3

I am quite new to d3 and I am trying to make a choropleth map of the US. But my point is how to adjust Alaska and Hawaii in the final map. In the past I used to do this in Illustrator, but I am not ...
2
votes
1answer
979 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 ...
-1
votes
1answer
35 views

Seeking Boston shapefile 1630?

I found this map on Reddit and was curious if anyone knows how it was made. https://www.reddit.com/r/boston/comments/2xu9ix/modern_map_of_boston_compared_to_original_1630/ I think I could make it ...
12
votes
7answers
20k views

Source for GeoJSON data for the US

Does anyone know of any good sources for US data (counties, congressional districts, etc) in GeoJSON format? Has anyone converted public-domain shapefiles/sources to GeoJSON that they would be willing ...
2
votes
1answer
49 views

Seeking USA congressional district to county relationship files?

This must be a common enough problem that other users have come across it. I've finagled my way around inconsistencies and dropped observations, but now I'm reaching out to see if anyone knows of a '...
0
votes
0answers
29 views

Obtaining geographic data for California?

Where can I download census tracts and infrastructure data of California for 1997?
-1
votes
1answer
51 views

Seeking API/software tool that will return US state senate and state house district number for given latitude/longitude?

I have a bunch of addresses that I need to find the corresponding State Senate and State House district for their latitude and longitude. It is possible to use shapefiles in QGIS to get this ...
0
votes
1answer
179 views

Seeking crosswalk of census tract to town instead of CDP?

I'm trying to match towns from a dataset to Census tracts in the year 2000, with FIPS code as a place identifier. I'm aware of http://mcdc2.missouri.edu/websas/geocorr2k.html#GFOPTS, the GeoCorr ...
17
votes
8answers
40k views

Seeking shapefile of city boundaries in US?

Where can I find a shapefile that contains boundaries for the major cities in the United States? I have tried the census website but could not find anything.
1
vote
1answer
48 views

Downloading digital elevation model of United States?

I would like to download a digital elevation model of the United States, where can I do this? It doesn't need to be super detailed. But it would be nice, if was clipped at the country borders – ...
0
votes
2answers
798 views

Seeking lat/lon for county seats?

I'm currently designing a map for methamphetamine labs in my state. Ideally what I need is the center lat/lon coordinates for each county in my state or the lat/lon coordinates for each county seat. ...
6
votes
4answers
2k views

Using American Fact Finder to download data for all block groups in state at same time?

I am having issues using the advanced search on the American Fact Finder to download census block data for a whole state at a time. The best option that it gives me, when trying any route, is to ...
0
votes
0answers
15 views

Regarding Sec Town Range? [duplicate]

This is regarding Sec Town Range. I have received this in parcel shapefile. Is there any way to use this to index the data?
39
votes
10answers
47k views

Where to get 2010 Census Block data?

I would like to download 2010 Census Block Data for several towns and I can't seem to find it on American Factfinder. Is it there? And if not, does anyone know where I could find it?
2
votes
3answers
265 views

Seeking open source bulk US DEM or imagery? [duplicate]

I am looking to create terrain hillshading for my maps that contain a small region of the US. I intend to show about eight to ten states at a time (at about ~1:5,000,000 scale). It has been some ...
0
votes
0answers
89 views

Solar Insolation Product with highest spatial resolution

My objective is to compare gis derived Solar Insolation against remotely sensed one. However modis has far coarser resolution then required. Is there any other product released? The site is in ...
-1
votes
1answer
36 views

Seeking population data for Detroit?

I need population and age breakdown data for Detroit. I have found census tract shapefiles but none with the attribute data that I need. Any idea where I might find such data?
3
votes
3answers
2k views

Gathering data for large number of census block groups?

I would like to collect some census data for every block group in New England. I'm primarily interested in median income and median age, and ideally I'd like a large .csv file with one row per census ...
0
votes
2answers
87 views

Seeking Farm Resource Regions shapefiles?

Could someone direct me to the potential sources to find the Shapefiles of farm resource regions? The map exactly looks like the one here https://www.usda.gov/media/blog/2014/04/22/celebrating-our-...
0
votes
1answer
36 views

Watershed layers that drain to ocean?

I have been searching for a watershed layer for California or for the entire US that encompasses all upstream area from ocean outlets (e.g. the entire catchment draining into each ocean output). I ...
-1
votes
1answer
38 views

Seeking New York Neighborhoods Boundaries?

I need a source of New York neighborhoods boundaries coordinates, I need to draw polygons around them just like this page is doing to Wingate, Brooklyn. https://www.exrny.com/listings/121719/2-bed-in-...
4
votes
3answers
233 views

CRS for submission to Minnesota DOT

Does anyone have experience using QGIS to submit shapefiles to the Minnesota DOT (MNDOT)? I am using EPSG:26915 but got rejected due to an error in the CRS. MNDOT Specs call for "UTM coordinates,...
16
votes
2answers
3k views

Why are Galileo satellites inaccessible in USA?

I see that some (or all?) Android devices that support Galileo global positioning system are deliberately programmed to self-disable their Galileo support when used in USA or US territories. This ...
1
vote
1answer
50 views

Comparing Tract-level data to State-level?

I'm using firearm trace data (available at the state-level) and attempting to compare it to socially disadvantaged areas (census tracts) by the way of regression analysis. Katz and Schnebly (2011) ...
0
votes
1answer
306 views

Sea level rise prediction by zip code in the U.S. coasts

I'm relatively new to GIS data and am working on a project on climate change. I can find online predictions of sea level rise by zip code in the U.S. East, West and Gulf Coasts (for example: http://...
0
votes
0answers
16 views

Translating Location Format from Wisconsin (USA)?

I have a location format in the form of '28N-24E-36' within a certain county (not sure that's important). I found a map that lists Section-Township-Range for the county of interest as six integers ...
-2
votes
1answer
35 views

Seeking contour (topo) lines for United States?

I can find five foot contours for most areas, where can I find 1 foot or 2 foot contour lines? Prefer ArcGIS or AutoCAD but will take anything I can get.
-1
votes
4answers
131 views

Why does ASTER create -0 to 0 instead of -1 to 1? [closed]

On my previous question on ASTER I need some more information on ASTER for time series analysis and I need to research on building NDVI because when I ran them for each ASTER. Most of them it came out ...
0
votes
1answer
106 views

Choosing projection for Continental United States?

I'm working on some code that maps data across the continental US. I need to project things with a unit length of feet, ex: EPSG:26916. Is there a projection like 26916 that works for all of the US? ...
0
votes
1answer
37 views

Using legal descriptions of lands and their subsections to draw polygon?

I have Legal descriptions of land (Section, Township, Range) and their subsections (N1/2, S1/2, E1/2, W1/2, NW1/4, SW1/4, N1/2NW1/4, etc.) I want to have a polygon encompass the subsections of the ...
0
votes
2answers
151 views

Seeking US Highway exits shapefile? [closed]

Does anyone know where to download a shapefile containing the locations of US interstate and highway exits?
4
votes
4answers
7k views

Does the NED use geocentric or geodetic latitude?

What kind of latitude does the National Elevation Dataset (NED) use? Geocentric or geodetic or something else? I can't find the information anywhere on their site (http://ned.usgs.gov/index.html) or ...
2
votes
3answers
11k views

Local geolocation to FIPS county using Latitude and Longitude

I millions of lat,long pairs and I want to convert to FIPS county codes that match with the US census data. In the past I used the census block api but that is too slow for the amount of numbers that ...
1
vote
3answers
7k views

List of the United States (US) state boundaries / borders as latitude/longitude pairs for geofence?

I'm just trying to find a single simple file (CSV or XML ideally) which has the latitude and longitude pairings for each of the 50 United States (plus DC, though the addition of provinces such as ...
1
vote
3answers
414 views

Which coordinate system is the best for a distances from whole USA?

I have about 100 cities all over the USA and want to calculate some distances. According to that I want use one coordinate projection and need to know which one is the best so I can get the most ...
1
vote
0answers
251 views

Source for US urban-suburban-rural classifications by census tract

I would like to assign every U.S. census tract its own unique classification on the urban-rural spectrum. USDA's Rural-Urban Area Commuting Codes (RUCA) is a good start, but it's focus is rural - it ...