{"id":"8748d35b-d28f-4e49-95a1-cb31986009d5","type":"DATASET","name":"Gravel statistics of the Canton of Zurich from 1990","slug":"gravel-statistics-of-the-canton-of-zurich-from-1990","description":"Annually collected cantonal gravel removal and excavation installation with residual cubicity gravel removal, rail transport share and open areas.","free_access_class":"FREE_NO_AUTH","auth_type":"NONE","homepage_url":null,"docs_url":null,"repo_url":"https://daten.statistik.zh.ch/ogd/daten/ressourcen/KTZH_00000736_00001881.csv","status":"ACTIVE","verification_state":"VERIFIED","tags":["transport"],"logo_url":"https://www.google.com/s2/favicons?sz=64&domain=daten.statistik.zh.ch","primary_source_url":"https://daten.statistik.zh.ch/ogd/daten/ressourcen/KTZH_00000736_00001881.csv","extraction_confidence":"0.16","created_at":"2026-06-19T10:57:58.534Z","updated_at":"2026-10-12T20:48:49.623Z","last_verified_at":"2026-10-12T19:22:51.663Z","deprecated_at":null,"ranking_score":38,"last_ranked_at":"2026-10-10T11:34:36.719Z","last_seen_at":null,"last_validated_at":null,"last_uptime_at":"2026-10-10T16:37:04.823Z","search_vector":"'1990':9A,44B,146A,181B 'a':254B 'abfal':49B 'abfall':186B 'activ':133B 'activities':270B 'after':222B 'air':60B,197B 'along':79B,216B 'also':89B,226B 'amt':47B,184B 'and':152B,163B,196B,210B,238B,257B,263B 'annual':10B,32B,169B 'annually':147B 'are':251B 'area':28B,109B 'areas':165B,246B 'basi':119B 'basis':256B 'by':182B,233B 'canton':5A,12B,39B,63B,118B,142A,176B,200B 'cantonal':149B,255B 'collect':11B,115B 'collected':148B,252B 'compil':42B 'compiled':179B 'cubic':20B 'cubicity':157B 'data':88B,225B 'dataset':30B,167B 'energi':51B,58B 'energie':188B 'energy':195B 'excav':16B,77B 'excavation':153B,214B 'extent':104B,241B 'extract':36B,86B,108B 'extraction':173B,223B,245B 'figur':113B 'figures':250B 'for':192B 'from':145A 'fur':185B 'für':48B 'gravel':1A,13B,21B,35B,71B,82B,131B,138A,150B,158B,172B,208B,219B,268B 'in':174B,271B 'indic':90B 'indicate':227B 'instal':17B,75B 'installation':154B,212B 'it':203B 'land':127B,264B 'luft':53B,190B 'manag':128B 'management':265B 'materi':94B 'material':231B 'mine':132B 'mining':269B 'monitor':122B 'monitoring':259B 'of':140A,143A,177B,198B,201B,207B,213B,230B,242B,260B 'offic':54B 'office':191B 'on':171B,253B 'open':27B,106B,164B,243B 'over':247B 'provid':31B 'provides':168B 'quantiti':83B 'quantities':220B 'rail':23B,97B,160B,234B 'rather':98B,235B 'record':67B 'records':204B 'region':136B,273B 'relat':129B 'related':266B 'remain':84B 'remaining':221B 'remov':14B,22B,72B 'removal':151B,159B 'removed':209B 'residu':19B,81B 'residual':156B,218B 'resourc':124B 'resource':261B 'road':100B,237B 'share':25B,92B,162B,229B 'sinc':43B 'since':180B 'site':78B 'sites':215B 'statist':2A,33B 'statistics':139A,170B 'support':121B,258B 'than':236B 'the':141A,175B,183B,199B,205B,211B,224B,228B,240B,249B,272B 'this':166B 'time':111B,248B 'to':267B 'track':102B,239B 'transport':24B,95B,137C,161B 'transported':232B 'und':52B,189B 'unrehabilit':107B 'unrehabilitated':244B 'use':125B,262B 'volum':69B 'volume':206B 'wasser':50B,187B 'wast':56B 'waste':193B 'water':57B,194B 'with':155B,217B 'zurich':7A,41B,65B,144A,178B,202B","popularity_score":"0.0000","maintenance_score":"0.5000","institution_id":null,"institution_type":null,"country_code":"CH","official_confidence":null,"proof_summary":null,"source_seed_url":null,"is_public_sector":true,"published_at":"2026-06-19T10:57:58.534Z","geographic_scope":"NATIONAL","name_en":null,"description_en":"This dataset provides annual statistics on gravel extraction in the Canton of Zurich, compiled since 1990 by the Amt für Abfall, Wasser, Energie und Luft (Office for Waste, Water, Energy and Air) of the Canton of Zurich. It records the volume of gravel removed and the installation of excavation sites, along with residual gravel quantities remaining after extraction. The data also indicate the share of material transported by rail rather than road, and track the extent of open, unrehabilitated extraction areas over time. The figures are collected on a cantonal basis and support monitoring of resource use and land management related to gravel mining activities in the region.","native_lang":"de","access_level":"direct","formats":["CSV"],"capability_tier":"live","trust_score":52.98076923076923,"merged_into_entry_id":null,"identity_key":"DATASET|https://daten.statistik.zh.ch/ogd/daten/ressourcen/KTZH_00000736_00001881.csv|gravel statistics of the canton of zurich from 1990","upstream_ref":null,"content_changed_at":null,"title_qualifier":null,"access":{"level":"direct","primary":{"kind":"download","label":"Download CSV","method":"GET","url":"https://daten.statistik.zh.ch/ogd/daten/ressourcen/KTZH_00000736_00001881.csv","format":"CSV","source":"distribution","runnable":true},"actions":[{"kind":"download","label":"Download CSV","method":"GET","url":"https://daten.statistik.zh.ch/ogd/daten/ressourcen/KTZH_00000736_00001881.csv","format":"CSV","source":"distribution","runnable":true}],"formats":["CSV"]},"maturity":{"entry_id":"8748d35b-d28f-4e49-95a1-cb31986009d5","granularity":"entry","granularity_label":"One unit = one catalog entry. A PROXY for the SCOPE.md §4 ladder, which governs source families, not entries: a family with 400 entries moves this reading 400 times as much as a family with one. Never compare or combine with the source_family reading.","level":"executable","level_index":4,"level_label":"Executable","meaning":"Queries run through Commodity","counts_as_coverage":true,"blocked_by":null,"rungs":[{"level":"discovered","level_index":1,"label":"Discovered","meaning":"Source and metadata recorded","evidence":"membership of the named population the ladder is taken over","counts_as_coverage":false,"met":true,"reached":true,"criterion":"TRUE"},{"level":"verified","level_index":2,"label":"Verified","meaning":"Access tested successfully","evidence":"entries.verification_state = 'VERIFIED'","counts_as_coverage":false,"met":true,"reached":true,"criterion":"entries.verification_state = 'VERIFIED'"},{"level":"profiled","level_index":3,"label":"Profiled","meaning":"Schema, dimensions and licence understood","evidence":"a data profile with at least one field (entry_data_profiles.field_count > 0)","counts_as_coverage":false,"met":true,"reached":true,"criterion":"EXISTS (SELECT 1 FROM entry_data_profiles p WHERE p.entry_id = entries.id AND COALESCE(p.field_count, 0) > 0)"},{"level":"executable","level_index":4,"label":"Executable","meaning":"Queries run through Commodity","evidence":"entries.capability_tier = 'live' — today's proxy for \"queryable through us\"","counts_as_coverage":true,"met":true,"reached":true,"criterion":"entries.capability_tier = 'live'"},{"level":"joinable","level_index":5,"label":"Joinable","meaning":"Canonical identifiers and concepts mapped","evidence":"a field link to a canonical identifier whose sampled VALUES match its format","counts_as_coverage":true,"met":false,"reached":false,"criterion":"EXISTS (SELECT 1 FROM entry_field_links efl WHERE efl.entry_id = entries.id AND efl.identifier_id IS NOT NULL AND efl.value_status = 'match')"},{"level":"reproducible","level_index":6,"label":"Reproducible","meaning":"Snapshots and transformation evidence retained","evidence":"at least one retained evidence manifest (migration 078)","counts_as_coverage":true,"met":false,"reached":false,"criterion":"EXISTS (SELECT 1 FROM evidence_manifests em WHERE em.entry_id = entries.id)"},{"level":"guaranteed","level_index":7,"label":"Guaranteed","meaning":"Monitored against an operational reliability target","evidence":"an active reliability target with a named monitor (migration 096)","counts_as_coverage":true,"met":false,"reached":false,"criterion":"EXISTS (SELECT 1 FROM entry_reliability_targets rt WHERE rt.entry_id = entries.id AND rt.is_active = true)"}],"officialness":{"basis":"catalog_inherited","label":"Inherited from the upstream catalog: this item came from a trusted official government catalog, and that provenance — not per-item proof — is the warrant. Its own proof score is below 80 or it matched no registered institution (apps/worker/src/connectors/catalog/qualify-store.ts).","proof_confidence":null,"proven_threshold":80,"institution_id":null,"definition":"CASE WHEN COALESCE(entries.is_public_sector, false) IS NOT TRUE THEN 'not_official' WHEN COALESCE(entries.official_confidence, 0) >= 80 AND entries.institution_id IS NOT NULL THEN 'per_item_proven' ELSE 'catalog_inherited' END"},"source_family":{"key":"daten.statistik.zh.ch","label":"One unit = one source family, approximated by the serving host of the entry's primary source URL (e.g. bdl.stat.gov.pl). A COMPUTED stand-in for the curated families of SCOPE.md §5, which no table holds yet. A family sits at the highest level any of its entries has reached, because a family is integrated to the depth of its deepest working integration. Never compare or combine with the entry reading."},"generated_at":"2026-10-12T23:36:51.836Z"},"api_details":null,"dataset_details":{"id":"cb87c2ad-578e-4685-bf3e-0bf309ce6cbb","entry_id":"8748d35b-d28f-4e49-95a1-cb31986009d5","upstream_issued":"2021-09-26T22:00:00.000Z","upstream_modified":"2026-04-13T05:02:52.068Z","themes":["SOCI","ENVI"],"update_frequency":null,"temporal_start":null,"temporal_end":null,"spatial_coverage":null,"landing_page":null,"license_id":"cc-by-4.0","license_raw":"http://dcat-ap.ch/vocabulary/licenses/terms_by","has_documentation":false,"has_data_dictionary":false,"has_versioning":false,"source_portal":null,"source_portal_url":null,"created_at":"2026-06-19T10:57:58.686Z","updated_at":"2026-07-09T07:44:13.025Z","publisher":"Amt für Abfall, Wasser, Energie und Luft des Kantons Zürich","publisher_url":null,"distributions":[{"id":"ac6d4478-3118-458c-892e-6f8ff106cec5","dataset_details_id":"cb87c2ad-578e-4685-bf3e-0bf309ce6cbb","title":"Gravel statistics of the Canton of Zurich from 1990","description":null,"access_url":"https://daten.statistik.zh.ch/ogd/daten/ressourcen/KTZH_00000736_00001881.csv","download_url":"https://daten.statistik.zh.ch/ogd/daten/ressourcen/KTZH_00000736_00001881.csv","media_type":null,"format":"CSV","byte_size":null,"license_id":null,"license_raw":"http://dcat-ap.ch/vocabulary/licenses/terms_by","last_checked_at":"2026-10-12T19:22:49.893Z","is_available":true,"last_http_status":200,"created_at":"2026-06-19T10:57:59.303Z","updated_at":"2026-10-12T19:22:49.893Z"}],"license":{"id":"cc-by-4.0","spdx_id":"CC-BY-4.0","name":"Creative Commons Attribution 4.0","url":"https://creativecommons.org/licenses/by/4.0/","is_open":true,"is_redistributable":true,"requires_attribution":true,"category":"cc","notes":null,"created_at":"2026-06-12T16:29:19.729Z"}},"license":{"id":"cc-by-4.0","spdx_id":"CC-BY-4.0","name":"Creative Commons Attribution 4.0","url":"https://creativecommons.org/licenses/by/4.0/","is_open":true,"is_redistributable":true,"requires_attribution":true,"category":"cc","notes":null,"created_at":"2026-06-12T16:29:19.729Z"},"reuse":{"license_id":"cc-by-4.0","license_name":"Creative Commons Attribution 4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","commercial_use":{"status":"yes","value":true},"redistribution":{"status":"yes","value":true},"attribution_required":{"status":"yes","value":true},"share_alike":{"status":"no","value":false},"personal_data_warning":{"status":"yes","value":true},"cache_and_mirror":{"status":"yes","value":true},"undetermined":[],"basis":"licence_text","confidence":0.95,"confidence_tier":"high","source_text":"Deed: \"Share - copy and redistribute the material in any medium or format for any purpose, even commercially\" and \"Adapt - remix, transform, and build upon the material for any purpose, even commercially\". Under the following terms: \"Attribution - You must give appropriate credit, provide a link to the license, and indicate if changes were made.\" Notices: \"other rights such as publicity, privacy, or moral rights may limit how you use the material.\" Attribution is the only term listed; no ShareAlike term appears.","source_url":"https://creativecommons.org/licenses/by/4.0/","reviewed_at":null},"license_raw":"http://dcat-ap.ch/vocabulary/licenses/terms_by","latest_check":{"id":"d7409804-480a-4578-93ed-68b5b3519d42","entry_id":"8748d35b-d28f-4e49-95a1-cb31986009d5","status":"VERIFIED","last_checked_at":"2026-10-12T19:22:51.407Z","p50_latency_ms":2435,"p95_latency_ms":null,"last_error":null,"consecutive_failures":0,"created_at":"2026-06-19T10:58:37.299Z","updated_at":"2026-10-12T19:22:51.407Z","consecutive_successes":12,"probe_url":"https://daten.statistik.zh.ch/ogd/daten/ressourcen/KTZH_00000736_00001881.csv","probe_method":"GET","probe_http_status":200,"probe_content_type":"text/csv; charset=utf-8","probe_succeeded_at":"2026-10-12T19:22:51.407Z"},"data_profile":{"id":"61f98ebb-c09d-476f-8ee1-d69ddf8e46f0","entry_id":"8748d35b-d28f-4e49-95a1-cb31986009d5","profile_source":"distribution","profile_kind":"dataset","dataset_id":null,"fields":[{"name":"thema","type":"text","label":null,"description":null,"description_en":"Topic category of the statistic, e.g. gravel extraction."},{"name":"indikator","type":"text","label":null,"description":null,"description_en":"Specific indicator being measured within the topic."},{"name":"einheit","type":"text","label":null,"description":null,"description_en":"Unit of measurement for the reported value."},{"name":"region","type":"text","label":null,"description":null,"description_en":"Geographic area the data refers to, e.g. Canton of Zurich."},{"name":"jahr","type":"int","label":null,"description":null,"description_en":"Year the data was recorded."},{"name":"wert","type":"int","label":null,"description":null,"description_en":"Numeric value of the indicator for the given year and region."}],"field_count":6,"sample_records":[{"jahr":"1989","wert":"3894517","thema":"Kiesabbau","region":"Kanton Zürich","einheit":"m³ fest","indikator":"Kiesabbau"},{"jahr":"1990","wert":"3110416","thema":"Kiesabbau","region":"Kanton Zürich","einheit":"m³ fest","indikator":"Kiesabbau"},{"jahr":"1991","wert":"3380652","thema":"Kiesabbau","region":"Kanton Zürich","einheit":"m³ fest","indikator":"Kiesabbau"},{"jahr":"1992","wert":"2786205","thema":"Kiesabbau","region":"Kanton Zürich","einheit":"m³ fest","indikator":"Kiesabbau"},{"jahr":"1993","wert":"2397000","thema":"Kiesabbau","region":"Kanton Zürich","einheit":"m³ fest","indikator":"Kiesabbau"}],"record_count":null,"data_size_bytes":"1447","dataset_count":null,"query_examples":[{"url":"https://daten.statistik.zh.ch/ogd/daten/ressourcen/KTZH_00000736_00001881.csv","curl":"curl -sL 'https://daten.statistik.zh.ch/ogd/daten/ressourcen/KTZH_00000736_00001881.csv' -o data.csv","label":"Download distribution","method":"GET","description":"Full csv file download — the schema shown was inferred from the file's first records."},{"url":"https://daten.statistik.zh.ch/ogd/daten/ressourcen/KTZH_00000736_00001881.csv","curl":"curl -sL 'https://daten.statistik.zh.ch/ogd/daten/ressourcen/KTZH_00000736_00001881.csv' -H 'Range: bytes=0-4095'","label":"Preview first bytes","method":"GET","description":"First 4 KB of the file (servers honoring Range requests)."}],"status":"ok","error_message":null,"profiled_at":"2026-10-06T20:10:30.158Z","run_id":"bfb10d3d-e99e-4cc1-8e16-2e80e6ea434a","created_at":"2026-06-19T11:47:40.923Z","updated_at":"2026-10-06T20:10:30.158Z","license_raw":null,"license_id":null,"consecutive_failure_count":0,"last_error_at":null,"last_error_message":null,"previewable":true,"personal_data":{"status":"none","basis":"no_person_column_cited","grain":"none","allowed":true,"columns":{"direct_identifiers":[],"family_names":[],"given_names":[],"attributes":[],"unresolved_names":[],"measures":[],"entity_identifiers":[]},"publication":null,"publication_evidence":null,"notice":"personal data: no cited column names a natural person (the cited columns are all this reads)"}},"datasets":[],"limits":[],"manifest":{"answer_sha256":"dd6cf5bd2e309b3b10f44ababbc630579ec241c5d636616542a01058b109181a","answer_sha256_rule":"sha256 (hex, UTF-8) of JSON.stringify(this body) after deleting the keys listed in manifest.stamped_keys from manifest, and deleting manifest itself if it is then empty. The hash was computed before the stamp existed, so no field of the stamp is inside it.","stamped_keys":["answer_sha256","answer_sha256_rule","stamped_keys","row_count","row_count_basis","live","live_basis","created_at","created_at_basis","durable_citation"],"row_count":22,"row_count_basis":"Objects that are elements of a JSON array anywhere in this body, excluding manifest. Not a claim about which collection is the answer. Largest single collection: maturity.rungs[] (7 rows).","live":true,"live_basis":"This body was produced by executing the request.","created_at":"2026-10-12T23:36:51.876Z","created_at_basis":"When this response body was assembled, deliberately OUTSIDE the hashed bytes so the same answer hashes identically on every request. Not the upstream read time — that is provenance[].retrieved_at. A zone-cached replay carries the assembly time, not your receipt time.","durable_citation":"This manifest is produced at response time and is NOT stored. A durable, replayable citation is persisted only on an explicit cite: GET /api/v1/entries/{id-or-slug}/evidence, or the MCP cite_query tool. Both are entry-scoped, because evidence_manifests is entry-shaped; a domain answer spanning several sources has no single entry and cannot be persisted through that path."}}