Data Sources & Attribution

Reloquent — the RLQ API

Last updated: 2026-10-02

RLQ, Reloquent’s spatial enrichment API, is built from the sources below and returns attributes from them. Their licenses flow through to you under our Terms of Service §7 and the Acceptable Use Policy.

What you must do. Keep the attribution our API hands you: the attribution block in every RLQ result. Credits marked Required below are license conditions. Credits marked Requested are courtesy for public-domain data, but we ask that you keep them.

What Reloquent changes. We reproject, clip, simplify, subset, and re-encode source data, decode or rename fields, and derive values (for example, slope from elevation). These changes are ours; none of the agencies or organizations below has reviewed, approved, or endorsed them or our service.

OpenStreetMap — Required (ODbL 1.0)

Used by: RLQ osm_roads, osm_amenities.

OpenStreetMap data is © OpenStreetMap contributors and available under the Open Database License (ODbL) 1.0. Credit: ”© OpenStreetMap contributors”, linked to https://www.openstreetmap.org/copyright.

• RLQ results are produced works: attribution is required, and share-alike does not reach your own application or data.

Copernicus DEM (GLO-30) — Required (ESA licence)

Used by: RLQ terrain_elevation and terrain_slope outside U.S. 3DEP coverage.

Licensed under the COP-DEM-GLO-30-F “Full, Free & Open” licence. RLQ includes the credit in attribution.required[] only when GLO-30 actually served a value.

Required credit: “produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved”

The organisations in charge of the Copernicus programme by law or by delegation do not incur any liability for any use of the Copernicus WorldDEM-30.

If you make this data available to the public, you must also include that sentence in your own terms or legal notice, must not suggest endorsement by the European Union, ESA, Airbus, DLR, or the Copernicus programme, and must bind anyone you let redistribute it to the same conditions (Terms §7).

Overture Maps Places — Required (per-source licenses)

Used by: RLQ overture_places (Overture release 2026-03-18.0). Each place record comes from one source, under that source’s license:

Credits: ”© Overture Maps Foundation” and “Data from Foursquare. Copyright 2024 Foursquare Labs, Inc. All rights reserved.” RLQ includes both whenever an Overture place appears in a result. Changes: Overture transformed the Foursquare data to its schema; Reloquent selects fields (name, category, confidence, phone, website, address) and matches places to your input.

Foursquare’s notice, reproduced in full as it requires:

© 2026 Foursquare Labs, Inc. All rights reserved.

The Foursquare OS Places dataset (the “Data”) is licensed under the Apache License, Version 2.0 (the “License”). You may not use, modify, or distribute the Data except in compliance with the License.

As set forth more fully in the License, if you use, modify, or distribute the Data, you must: – provide recipients with a copy of the License. – if applicable, include prominent notices to the extent you’ve changed the Data. – preserve attribution to Foursquare, including preserving the full content of this NOTICE.txt file.

To ensure appropriate attribution to Foursquare, we recommend the following: – if using/distributing the Data in flat file form as-is or after making changes/modifications: include this NOTICE.txt file, which may be modified to include an additional notice of your changes/modifications, if any. – if using/distributing the Data in API form as-is or after making changes/modifications: include a copy of the content from this NOTICE.txt file prominently in your developer documentation for such API, which may be modified to include an additional notice of your changes/modifications, if any.

You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0. Unless required by applicable law or agreed to in writing, the Data distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

RESOLVE Ecoregions 2017 — Required (CC BY 4.0)

Used by: RLQ ecoregions_wwf (the RESOLVE Ecoregions 2017 dataset — 846 ecoregions — not the older Olson 2001 “WWF Terrestrial Ecoregions” dataset).

Licensed under CC BY 4.0. Credit: “Ecoregions 2017 © RESOLVE (CC BY 4.0)”. Citation: Dinerstein, E., et al. (2017), “An Ecoregion-Based Approach to Protecting Half the Terrestrial Realm,” BioScience 67(6):534–545, https://doi.org/10.1093/biosci/bix014.

U.S. Census Bureau TIGER/Line — Required

Used by: RLQ tiger_states, tiger_counties, tiger_places.

Not copyrighted, but the Census Bureau requires that it be acknowledged as the source. Credit: “U.S. Census Bureau, TIGER/Line®”. TIGER/Line® is a registered trademark of the U.S. Census Bureau. TIGER/Line boundaries are for statistical data collection and tabulation only; they do not determine jurisdiction or ownership and are not legal land descriptions. Several American Indian area types (for example, OTSAs, TDSAs, SDTSAs, and ANVSAs) are statistical areas, not reservations.

Countries, subdivisions and continents — Required

Used by: RLQ admin_regions (each point’s country, its ISO 3166-2 state or province with official and English names, and its continent, worldwide).

• Boundaries: Overture Maps Foundation Divisions, licensed under the Open Database License (ODbL 1.0). Credits: ”© Overture Maps Foundation (Divisions)” and ”© OpenStreetMap contributors”, plus Overture’s upstream contributors “geoBoundaries”, “Esri Community Maps contributors” and “Land Information New Zealand (LINZ)”, each under CC BY 4.0.
• Continents: derived from GeoNames, CC BY 4.0. Credit: “GeoNames (geonames.org)”.
• Codes and names: ISO 3166 codes and official subdivision names from Debian iso-codes (LGPL-2.1-or-later); English subdivision names from Unicode CLDR (Unicode License v3, notice in the RLQ API docs), with corrections from Wikidata (CC0).

Boundaries are not legal determinations of sovereignty or jurisdiction. Where Overture Maps treats a territory as disputed, RLQ returns the area’s own name and marks it disputed, with no country code.

U.S. public-domain sources — Requested

These are works of the U.S. federal government. No license is needed; the agencies ask to be acknowledged, and we ask that you keep the credit.

Suggested credit: “Includes U.S. public-domain data from the U.S. Geological Survey, U.S. Forest Service, Bureau of Land Management, U.S. Census Bureau (TIGER/Line®), and U.S. Environmental Protection Agency; not endorsed by these agencies.”

Motor-vehicle and access data

Motor-vehicle-use and access information, including U.S. Forest Service Motor Vehicle Use Map (MVUM) and BLM Ground Transportation Linear Features (GTLF) data, is reference information only and not a legal determination. The current official MVUM for each national forest (36 CFR 212.56, 261.13) and the local BLM office’s travel-management decisions and posted or temporary closures govern. Routes marked “limited” may be restricted by season, by vehicle type, or to authorized or permitted users only, and a designation does not mean a route is passable, maintained, or safe.

BLM travel data carries access restrictions, which we pass through: RLQ’s blm_gtlf results include BLM’s access-restriction and off-highway-vehicle limitation fields. A route without a restriction can still be closed; check with the local BLM office.

One-line combined credit

For interfaces with limited space:

Data © OpenStreetMap contributors (ODbL), © Overture Maps Foundation (includes Foursquare data, Apache 2.0), Ecoregions 2017 © RESOLVE (CC BY 4.0), U.S. Census Bureau TIGER/Line®, and U.S. public-domain data from USGS, USFS, BLM, and EPA. Enriched via Reloquent.

When a response includes admin_regions, add: boundaries © Overture Maps Foundation (ODbL), geoBoundaries, Esri Community Maps contributors and LINZ (CC BY 4.0); continents from GeoNames (CC BY 4.0).

Add the Copernicus credit whenever a response’s attribution.required[] carries it.