OBSERVATORY OF THE DISSESTO

Description

The hydrogeological instability observatory reports what is described in the General Metropolitan Territorial Plan (preliminary project adopted by Ministerial Decree No 66 of 22 December 2022), which includes the following types of instability: gravitational (slides) - mixed gravitational-hydraulic (alluvial conoids) - hydraulic (flooded areas, floodable areas, disturbances linked to torrential dynamics) - linked to the fall of snow masses (avalanches)As regards the MAIN HYDROGRAPHIC NETWORK OF PIANURA AND FONDOVALLE, bands A, B, C and the floodable areas of the PAI were considered, as well as the floodable areas type H (P3), M (P2), L (P3) of the PGRA of the Po River Basin Authority, characterised by different return times and associated with different flows. M (P2), L (P1) of the PGRA of the Po River Basin Authority and the potentially floodable areas with very high hazard (Eel if linear failures – Eea if areal failures) with high hazard (Ebl if linear failures – Eba if areal failures) with medium/moderate hazard (Eml if linear failures – Ema if areal failures) deriving both from the Municipal Regulatory Plans and (for municipalities that are not yet adequate to the PAI) from a series of hydrogeological studies from various sources.For CONOIDS, 4 categories have been identified: active cone with very high hazard (Cae), active cone with high hazard (Cab), active cone with medium/moderate hazard (Cam) and naturally stabilized cone (CS).As regards gravitational movements, FRANE have been divided into areas and points and have been classified into 4 types: active landslides (FA), quiescent landslides (FQ), stabilised landslides (FS) and unclassified landslides.Finally for VALANGHE the following categories have been distinguished: valanghe, zone pericolose e valanghe minori.Si riportano inoltre le Aree a Rischio Idrogeologico molto Elevato (RME) del PAI aggiornate con le modifiche apportate dai Piani Regolatori Comunali adeguati al PAI, gli abitati da trasferire (in seguito a Decreti risalenti agli anni 50 e 60) e i comuni classificati a rischio sismico ai sensi della DGR n. 6-887 del 30/12/2019.Le fonti dei dati sono:- il Piano di Assetto Idrogeologico (PAI) dell’Autorità di Bacino del Fiume Po- il Piano Gestione Rischio Alluvioni (PGRA) dell’Autorità di Bacino del Fiume Po- i Piani Regolatori Comunali (PRGC) adeguati al PAI- una serie di studi idrogeologici redatti da vari Enti tra cui AIPO, Regione Piemonte, ARPA, ex-Provincia di Torino, Comunità Montane)- il SIFraP - Sistema Informativo Frane in Piemonte- il Sistema Informativo Valanghe (S.I.V.A)Per alcuni livelli informativi è presente un campo "classe" che rappresenta il grado di affidabilità del dato ed un campo "fonte_del_dato"; for both the decoding is reported in the file decoding_fields.odtFor further information, please refer to the file "G1_DISPO_tecn_dif_suolo_GEO1_GEO2.pdf" (Technical regulatory provisions on soil protection and failure framework).

Resources

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Tags

  • alluvione,-danni,-dissesto,-frane,-conoidi,-aree-inondabili,-aree-alluvionate,-esondazioni,-aree-allagate
  • fasce-di-rispetto-fluviali,-pai,-pgra,-prgc,-valanghe,-rischio-sismico,-studi-idrogeologici
  • opendata
  • rndt
  • eu

Topics

  • TECH

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