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1answer
28 views

Determining projection of Texas county shapefile?

I have a Shapefile of San Jacinto County in Texas. It thinks it is NAD83 UTM Zone 15N, but the dataset isn't jiving with any other dataset. Max X: 1,073,721 Max Y: 11,223,970 Min X: 895,728 ...
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0answers
14 views

Question about projected coordinate systems 30m DEM for Contiguous US

What is the best Projected Coordinate System (PCS) for the contiguous US (whole, not parts) if I want to maintain distance and area accuracy as much as possible across a nationwide DEM dataset? I'm ...
1
vote
1answer
54 views

Getting a list of zip codes with its adjacent zip codes

I need a list in the form of adjacency list that contains all zip codes in the United States that each has a list of adjacent zip codes. I tried searching for it on the internet. Many of them only ...
4
votes
3answers
128 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 ...
0
votes
1answer
25 views

Setting the Geometry with sql query

I am trying to merge data from a U.S. states shapefile with data on each state. I used this SQL query which is supposed to work: SELECT * FROM child_poverty_by_state UPDATE child_poverty_by_state ...
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0answers
31 views

What projected coordinate system to use for whole of USA? [duplicate]

I need to determine a projected coordinate system for a wide area that exceeds more than one zone? For Example: If I want to give US a UTM projection which zone will be represent the whole US? ...
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3answers
34 views

Using American Fact Finder to download data for all block groups in a state at at 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 ...
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2answers
26 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 ...
0
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1answer
23 views

Census data 5-year estimate for the United States

I am looking to download demographic data 5-year estimate based on census tract for the whole United States. The census website has the information, however, it does not let me to select the whole ...
0
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2answers
28 views

How do you bring a DOQQ into your dataframe

I have a DOQQ aerial photo that is orthorectified. I would like to bring it into the dataframe to digitize building and streets and create feature layers.
3
votes
2answers
44 views

Choosing projection to use for Least-Cost Path analysis at continental scale?

I am trying to find least cost paths from the southern USA to the Great Lakes region (for example). My resistance layers are currently in an equal area projection but I'm wondering if I should convert ...
2
votes
1answer
74 views

Which projected coordinate system should be used for mapping the US?

I'm on a project requires integrating data for all states in the US. It means I have two roadway datasets and I'm going to assign the attributes of roadways in one dataset to the same roadways in the ...
1
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0answers
41 views

Insanely large house numbers in TIGER data

I'm parsing the US TIGER data and I'm coming across huge house numbers. example: 10100005 Thousand oaks drive, st johns, florida Google maps, and open street maps - nominatim says this is valid! Im ...
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0answers
44 views

Creating a custom Lambert Conformal Conic projection in ArcGIS 10.1 and/or 10.2.2

referring to the table below, I am trying to use the values on the left from another program that uses different terms for the parameters of a custom projection. I just wanted to make sure that ...
0
votes
1answer
36 views

Standard for identifying cities?

I was doing a research project a little while ago and found out about FIPS 6-4 which is used to identify counties in the United States. I also understand that this standard is a bit out of date. Is ...
0
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2answers
42 views

Looking for 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. ...
0
votes
1answer
21 views

Loading Tiger & ACS Data Into CartoDB

Does anyone have experience loading the pre-joined TIGER shape files and ACS 5 year data files by block group into CartoDB? I have downloaded the data from ...
1
vote
1answer
42 views

Population by Census Tract

I am looking to obtain count of population by census tract. The ideal output would be Census Tract 1919.01 Population = 7,435. Does anyone know of resources where I can get this information. I tried ...
0
votes
1answer
46 views

Adjusting for road surface in Network Analyst? [closed]

I'm building a street network dataset and want to adjust the speed limit of certain segments to account for road surface (paved vs. unpaved). Are there any guidelines/rules for doing this (e.g. an ...
1
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1answer
28 views

How to translate 1980 US Census Place Code to post 1990 Place FIPS?

US Census PLaces are coded differently pre-1990 and post-1990, after the introduction of FIPS Code. For instance, for Albertville, AL: Pre-1990 : Place Code - PLACEA : 0030 Post-1990: Place FIPS - ...
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0answers
20 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 ...
0
votes
0answers
53 views

How do I use the new USGS topo WM(T)S in QGIS?

The WMS link for "Scanned Topo Maps from USA Topo" in http://viewer.nationalmap.gov/example/services/serviceList.html no longer works (HTTP 400). ...
2
votes
0answers
35 views

Historical US zip code allocations and locations?

Is there a data source available that has the full history (right back to the 1960's) of each US zip code? By history I mean, for each zip code: the date it was created, if later than 1 July 1963, ...
2
votes
2answers
58 views

What USGS maps exist in the 7.5' × 15' metric 1:25,000 series?

While browsing through the library, I discovered that USGS has, in fact, produced some metric maps at 1:25,000. One example is Thendara (NY), 43075-F1-TM-025. As far as I can tell, those maps are ...
1
vote
1answer
59 views

Excel/Google Docs > Plss Map [closed]

Is there a way to map out PLSS (Public Land Survey System) TWP (township),RNG (range) and Section based off a field in google docs? I was thinking if you had your first column with the PLSS area in ...
0
votes
1answer
28 views

Where can I find 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 and I would like them to be free of charge. Cheers,
0
votes
1answer
65 views

When is an address in a new subdivision available for mail delivery?

I have customers that are complaining that some addresses validate on the USPS validation site (https://tools.usps.com/go/ZipLookupAction!input.action) but my geocoding vendor can't geocode the ...
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2answers
58 views

Demographic Information of U.S. Census Blocks

I am struggling to find the blockwise (not blockgroup or tract) data like employment status, household income, commuting distance, list of place of interest, industry information. By using American ...
1
vote
2answers
95 views

Where can I get the 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 ...
1
vote
2answers
144 views

Data providers equivalent to USDA/NRCS/FSA Common Land Unit (CLU)?

For one of my agricultural projects, I really need reasonably accurate field boundaries for fields in the US, specifically Iowa right now but later, other similar states. The USDA/NRSC/FSA Common ...
0
votes
0answers
38 views

Getting business listing data for mapping for New York?

How should I go about efficiently compiling the data to map the locations of all the businesses within a given city or town? Are there any free online resources that offer searching businesses by ...
0
votes
1answer
30 views

Raw State Data on Health and Social Outcomes

I am looking for raw health and social outcome data (poverty, obesity, education levels, etc.) by state. I would like to download it as a csv or excel file. It needs to have the state fips listed in ...
2
votes
2answers
283 views

GDAL Conversion of US Topo GeoPDFs

I've used GDAL_translate with "--config GDAL_PDF_LAYERS" option to convert US Topo GeoPDFs to GeoTIFF and it works great for creating collarless topos based on the new format. However, I can't get it ...
0
votes
1answer
91 views

Where can I find GIS data about NYC's combined sewers (CSO) that's free to use?

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
1answer
45 views

Ohio DNR Oil Gas Lat / Long Conversion in ArcGIS 10.1

Is anyone familiar with the Ohio Oil Well Search off their website? For the Lat/Long, they have WH_X and WH_Y. The numbers in their do not match up with the actual Lats/Longs off the OHio Well ...
0
votes
1answer
95 views

Is it possible to get the positions of all the stoplights for a given area?

I would like to know if there is a database of longitude and latitude values that locate all stoplights for a given area in the US like a city or a state? How would one go about obtaining this info? ...
0
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2answers
43 views

United States City/State comprehensive database [duplicate]

I have been searching online for a comprehensive record of all Cities by State in the United States. When I searched I found some dead links to old data sets. My question is, where is the best place ...
0
votes
0answers
52 views

Looking for USA roads traffic load data

I would like to make a map of the USA Roads with traffic load data (I don't care if it updates monthly , quarterly...) in order to analyze location of customer's shops (they sell vehicle parts and ...
3
votes
0answers
79 views

Septic Tank Location Data for the Southeastern United States

I am compiling a database of septic tank locations to make some rough estimates of the magnitude of return flow to the groundwater system for the Floridan aquifer system. Ideally I would have a ...
3
votes
2answers
77 views

All US 2010 Census Data - Tract Level

I'm trying to find where I can download all the data (summarized to the tract level). By all data, I mean population race Marital status job wage age sex same sex couples kids education I need ...
1
vote
2answers
166 views

What are the most detailed and reliable address databases for the United States?

Here in Britain people can license the Ordnance Survey's AddressBase product, which provides a list of almost all the country's addresses, along with individually surveyed building locations. Like all ...
3
votes
2answers
51 views

How I relate Census Blocks to FIPS Division/Subdivisions

I need to be able to relate a Census Block to it's corresponding FIPS Division and Subdivision and I have not found any data file or reference to help me identify that relationship, can you help?
3
votes
0answers
92 views

How to geocode Guam addresses with their latitude/longuitude? [closed]

I am attempting to get lat/longs for a table of 25,000 addresses for Guam. Guam's addressing style doesn't follow the typical address number range. I've exhausted all of my geocoding resources. ESRI, ...
0
votes
1answer
614 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 ...
3
votes
1answer
188 views

How does a newbie get household income data based on address to the block level?

I am beginning a research project and need to find a way to access the census data about household income. We need it at a closer level than by zip code since income varies a lot by zip code in our ...
0
votes
0answers
66 views

MapServer 6.2: Using REPEATDISTANCE and BUFFER/PRIORITY accordingly: US Interstate Icons/Symbols

I have a map focused on the United States displaying US Interstates. The goal: to make the US interstate symbols look nice and consistent throughout the map. The three attributes I think are the ...
1
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0answers
75 views

Is it possible to use USGS .shd files in QGIS?

Has anyone successfully used QGIS with US Geological Survey shd files to map geology - specifically to display colors and geological symbols (dip/strike etc) stored in a USGS supplied shd file. ...
2
votes
3answers
240 views

Where/how can I find/buy/make building footprints for Kent County, MI (Grand Rapids, Wisconsin, etc)?

We need building footprints for Kent County, MI along with their associated street addresses. Primarily we're looking for Grand Rapids and some of Wisconsin, MI, but if someone had access to this ...
3
votes
3answers
550 views

Do you know of any sites where I could find some cool recreational shapefiles?

Do you know of any sites that I could find some cool recreational shapefiles? An example would be shapefile of the golf courses, ski resorts, or maybe baseball fields in the united states?
10
votes
7answers
8k views

Where can I find a shapefile of city boundaries in the 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.