Naqliyoti gidravliqi, usuli bo jarayoni ob az joe ba joy digar kuchondani masolehi sakht. Naqliyoti gidravliqi khangomi gidromekhanikonii korhoi zaminkaniyu kuhkori va sokhtani inshooti khoki (sarband, damba va gayra) baroi dur kardani dajgolu khokistar az deghoi bur, intiqoli sarvathoi zerizamini va dur kardana partovhoi prosesshoi purfayzkunii onho, az joe ba joe kuchondani masolehi gunogun (kogazporayu arramayda, ashyoi khomi zavodhoi qandu spirt va gayra) istifoda meshavad. Naqliyoti gidravliki du khel meshavad: betazyiq va botazyiq.
Dar Naqliyoti gidravlikii betazyiq gidroomekhta dar novahoi moilu rukushod, ki fishori boloi onho ba fishori atmosfera barobar ast, harakat mekunad; dar Naqliyoti gidravlikii botazyiq gidroomekhta daruni truboprovodho tahti fishori barziyod harakat mekunad. Ii fishori barziyod bo yorii nasosho (masalan, nasosi parmachoh, nasosi angishtkash va gayra) ba amal ovarda meshavad. Baroi hisobu kitobi Naqliyoti gidravliki asosan diametri truboprovod, konsentrasiyai jismhoi sakht dar gidro- omekhta va muqovimati gidravliki muhim ast. Tavassuti Naqliyoti gidravlikii botazyiq borhoi gunogunro ba masofahoi durtar kashondan mumkin ast (masalan, dar ShMA bo in usul angishtro to 173 killometr, madanro to 115 killometr mekashonand).