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
-1
votes
0answers
19 views

Seeking hard water data source

I'm in need of finding a data source that I can use to create a heat map showing varying water hardness in the U.S. I've tried the usual, i.e. usgs, epa, and I'm not able to find what I need. I'd like ...
1
vote
1answer
66 views

Converting coordinates in Harrisburg (Pennsylvania) to WGS84 using GeoPandas

I have points in Harrisburg, PA in a GeoPandas (Python) GeoDataFrame with no CRS. How do I convert them to WGS84? I'm trying to do something like below but don't know what CRS to initially set the ...
0
votes
0answers
43 views

Creating fishnet across different UTM zones of USA

I am trying to create fishnet across the USA. In the end, I want to calculate summary statistics for the vegetation in each grid, as well as get the distance between the each cell's centroid and the ...
0
votes
1answer
50 views

Seeking SRTM 90m data

I'm looking for 90 meter resolution SRTM data to coverage a large state in the Western US. I used to use Derek Watkins' awesome tile grabber for SRTM90: https://dwtkns.com/srtm/ but as he explains on ...
1
vote
1answer
54 views

When did USPS stop shipping its TIGER/ZIP+4 product?

When did USPS stop producing its TIGER/ZIP+4 dataset? Updates to the product page archived by the WayBack Machine stopped in July 2011, but it looks like some people might have been using it later ...
0
votes
0answers
13 views

How to download NHDFlowline data for the Lower Colorado (area 15)

https://www.epa.gov/water-data-and-tools/nhdplus-lower-colorado-data-vector-processing-unit-15 doesn't seem to have a download link. Maybe https://nhdplus.com/NHDPlus/NHDPlusV2_15.php has them but ...
0
votes
2answers
33 views

How to find a piece of property on, say, Google Maps using Arizona's description?

How to find a piece of property on, say, Google Maps, using Arizona's description: S2 SE4 NW4 SE4 SEC 5 16N 19 SAC? I found a different one described as: Section: 33 Township: 24N Range: 20W ...
1
vote
1answer
58 views

Changing pixel size of georeferenced historical map

I have georeferenced an old toposheet from the US Army toposheet repository. However, when I look at the georeferenced map, it looks very grainy (i.e. pixel size is too big). How do I make it easier ...
0
votes
0answers
23 views

Reverse Geocoding for NH

I am attempting to reverse geocode points in the state of New Hampshire using the ArcGIS World Geocoding Service. I have set the "Within" distance to 500 and up to 1000 feet but all that is ...
0
votes
0answers
35 views

Mapping election data by zip

I am trying to create a map of Presidential election results by ZIP code, but all I have been able to find is election data by county (too broad) and precinct (too narrow). Does anyone know of a ...
0
votes
0answers
17 views

Can anything be inferred if NHD doesn't name a stream but the local municipality does?

Case in point: https://watersgeo.epa.gov/watershedreport/?comid=5781291 It shows up in the NHD as not having a name but I'm pretty sure that the local municipality that that creek is in (City of ...
1
vote
0answers
14 views

Seeking most natural unit of analysis in between US county and state

Do you have any suggestions for the most natural unit of analysis in between US county and state? I am looking at Core Based Statistical Areas but those don't seem to cover all counties.
3
votes
0answers
60 views

Working with the FlowDir in the national hydography dataset

In the National Hydrography Dataset there's a FlowDir field. According to https://www.townofnewipswich.org/sites/g/files/vyhlif4766/f/uploads/dataset_dictionary.pdf the two possible values for FlowDir ...
0
votes
0answers
36 views

USA road data set with lane widths?

I'm looking for a road dataset for the entire US that includes road and/or lane widths. For my purposes, the difference between an 8 foot wide lane and a 10 food wide lane matters a lot, so the OSM ...
-1
votes
3answers
345 views

List of extreme latitudes and longitudes for each US state?

I need a list of extreme latitudes and longitudes for each US state. That is, max / min latitude, max / min longitude. The purpose is to exactly center each state map when initially shown. I found ...
1
vote
1answer
84 views

Filtering demographic data for USA using TIGER/CENSUS data

I am working on Texas demographic data for a client. The ask is to collect demographic data for ZCTA areas of Texas state. I am looking for help in the source and linking demographic data for these ...
1
vote
1answer
76 views

What coordinate notation is this?

I have a shapefile with, for example, X_coords and Y_coords of 870058.5631 and 3226158.25 respectively. I want to convert these into decimal degrees in ArcGIS pro, but none of the input coordinate ...
0
votes
1answer
35 views

Points in shifted with different projected coordinate systems in same map

I am trying to map points on top of a map of Michigan taken from eBird a citizen science platform that records where birds were sighted. I downloaded an excel file for ebird sighting points, to use in ...
-3
votes
1answer
76 views

Is there an Excel, Stata, MATLAB, R or Python program or online website that converts geo-coordinates to distance at large scale? [closed]

I have the geo-coordinates (latitude and longitude) for more than 1000 counties (in Excel) in the US, and I want to know their distances to a particular county with known geo-coordinate. Is there an ...
0
votes
1answer
282 views

Appropriate CRS for Close Distances in USA

I have a very big dataset in the form of longitude-latitude points in the US; with points from the entirety of contiguous US. I need to calculate the distances between points and check if they are ...
2
votes
3answers
118 views

Range of numbers for Township and Range

I am creating a GUI for input of PLSS data (Township, Range, Section). There will be 5 pull down or spinner components: Township, North/South, Range, East/West, Section The North/South component will ...
1
vote
0answers
102 views

Seeking shapefile of urban, suburban, and rural areas of US [closed]

I'm looking for something like this, doesn't have to be super accurate. I've tried searching for the source of that image but to no avail.
-1
votes
1answer
34 views

Where can I purchase small scale high res raster imagery?

I am doing a personal project in my neighborhood that requires some georeferencing and as such I am looking for some sub-1m accuracy orthos with which to assist. The normal free sources such as USGS ...
1
vote
1answer
111 views

How to show Puerto Rico in "albersUsa" projection in Vega-Lite or Vega?

I have a shapefile that has all the US counties along with Puerto Rico and I want to visualize them in "albersUsa" projection using Vega or Vega-Lite. Problem is that in other projections, ...
1
vote
0answers
11 views

How to read *_LOW_HN / *_HIGH_HN fields in NY Street Centerline Data?

I've been looking at the NYC Street Centerline (CSCL), in particular number ranges for individual street segments. Quite a few look like this: ST_NAME L_LOW_HN L_HIGH_HN R_LOW_HN ...
0
votes
0answers
28 views

Identifying State Parks in the PAD-US dataset (Protected Areas Database)

I'm looking to map "State Parks," and I found this phenomenal, but complex database. Has anyone ever worked with the PAD datasets before? (or know any easier way to map State Parks?) In the PAD ...
1
vote
2answers
174 views

Seeking PLSS Quarter of Quarter Sections in Oregon

I'm looking for a quarter of a quarter of a section (PLSS) which is 40 acres in size for the state of Oregon. I looked at several government and Oregon state web site and could not find it. The only ...
0
votes
1answer
119 views

Which map projection is suitable for distance measurement purpose in USA?

I'm developing an application which uses PostGIS functions for measurements in the USA. In nutshell: the software is running in a car and use PostGIS functions in real time. For example: to measure ...
2
votes
1answer
941 views

Converting xy point to lat/long

I have data with columns x,y, address. And no any information about the projection of x,y points. How can I convert these points to correct lat/long pairs? 1091969,199515,27 HEDGEWAY CT 1092046,...
1
vote
1answer
39 views

ACS Data Interpretation

I am working with ACS 5-Year Data at the block group level in ArcGIS, and was hoping someone could explain what one of the elements on my attribute table means. I know that the B00001e1 is some type ...
1
vote
0answers
26 views

Finding distances associated with change in latitude and longitude at given location [duplicate]

I am writing a program that uses GPS lat and long coordinates and a time change to determine speed with the output in units of m/s (precise to 0.1 m if feasible, but 1 m is sufficient). When ...
0
votes
1answer
48 views

US Census Bureau Shapefiles with district IDs

I am loading senate district polygon shapefiles from https://www.census.gov/cgi-bin/geo/shapefiles/index.php?year=2019&layergroup=State+Legislative+Districts into my Leaflet map. Well, to be ...
2
votes
1answer
931 views

Choosing CRS for Chicago, Illinois

I have data for Chicago, Illinois, that is in WGS84 CRS. I need to convert it to a metric projected CRS, and I've found several possible options: EPSG 3528 EPSG 6454 EPSG 2790 EPSG 26971 Among these,...
10
votes
1answer
1k views

Why is there no state with code "03" (among other missing numbers)?

The US census documentation for state codes is missing several numbers. For example, there is no state with code "03", "07" and others. Here is the start of the list... STATE|STUSAB|STATE_NAME|...
4
votes
1answer
436 views

Is the ESRI ArcGIS definition of California Albers projection using units of feet correct?

There is a map projection promulgated by the government of the state of California and recommended for use in certain state and municipal regulations. It is an Albers Equal Area projection with ...
-1
votes
1answer
2k views

How many zip codes are in more than one state? [duplicate]

According to the accepted answer of Determining which US zipcodes map to more than one state or more than one city?, there are only 13 zip codes in two states. Reading down further on the page, ...
-1
votes
1answer
24 views

2010 Block Group Income

Does anyone know why there isn't 2010 income data at the block group level on American Fact Finder? I don't see it at the census tract either. Looking for documentation explaining why it's not there ...
1
vote
0answers
21 views

Accessing past USDA NRCS data

I am constructing a panel that includes past crop yields, but I found that SDA/WSS/GDG only grant access to the current version(2019) of cross-sectional tabular data. Is it possible to access ...
2
votes
2answers
60 views

Seeking NRCS soil survey data at state or county scale?

Ideally, I would like to download all the NRCS's soil survey data for Pennsylvania, as is shown on Web Soil Survey. However, if it's not possible, I would like to at least get the data for Bradford ...
3
votes
1answer
184 views

Why does Google Maps display strange, jagged state boundaries in the Great Lakes?

When I search for a state on Google Maps, I am shown the state outlined in red. I've noticed that the states that border the Great Lakes have boundaries that protrude into the lakes in strange ways. ...
0
votes
0answers
468 views

Downloading Census data to PostgreSQL PostGIS TIGER extension for Amazon RDS database

Can someone point me toward instructions on how to download census data for the postGIS_tigerP_geocoder extension? I would like to use the geocode() function, but any query returns 0 results. From ...
-1
votes
1answer
50 views

Seeking US coastal shapefile

I need to calculate distance to the coast based on a latitude and longitude point. My concept is to use a line of the East Coast to calculate the distance. Does anyone know where I can find a ...
0
votes
0answers
30 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
27 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 ...
0
votes
1answer
190 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 ...
1
vote
1answer
194 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
2answers
71 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 ...
-1
votes
1answer
38 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 ...
1
vote
1answer
88 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
1answer
449 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 ...

1
2 3 4 5
8