Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2021	Mar. 29, 2022
Entity Listings [Line Items]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Document Transition Report	false
Entity Registrant Name	RIVERVIEW ACQUISITION CORP.
Entity Central Index Key	0001846136
Entity Incorporation, State or Country Code	DE
Entity File Number	001-40716
Entity Tax Identification Number	86-1972481
Entity Address, Address Line One	700 Colonial Road
Entity Address, Address Line Two	Suite 101
Entity Address, City or Town	Memphis
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	38117
City Area Code	901
Local Phone Number	767-5576
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	true
Entity Public Float	$ 250,000,000
Auditor Firm ID	688
Auditor Name	Marcum LLP
Auditor Location	New York, NY
Units [Member]
Entity Listings [Line Items]
Title of 12(b) Security	Units, each consisting of one share of Class A Common Stock and one-half of one Redeemable Warrant
Trading Symbol	RVACU
Security Exchange Name	NASDAQ
Class A Common Stock [Member]
Entity Listings [Line Items]
Title of 12(b) Security	Class A Common Stock, par value $0.001 per share
Trading Symbol	RVAC
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		25,000,000
Redeemable Warrants [Member]
Entity Listings [Line Items]
Title of 12(b) Security	Redeemable Warrants, each whole warrant exercisable for one share of Class A common stock at a price of $11.50 per share
Trading Symbol	RVACW
Security Exchange Name	NASDAQ
Class B Common Stock [Member]
Entity Listings [Line Items]
Entity Common Stock, Shares Outstanding		6,250,000