Document and Entity Information - shares	9 Months Ended
	Jan. 31, 2016	Mar. 21, 2016
Document And Entity Information
Entity Registrant Name	Petro River Oil Corp.
Entity Central Index Key	0001172298
Document Type	10-Q
Document Period End Date	Jan. 31, 2016
Amendment Flag	false
Current Fiscal Year End Date	--04-30
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		4,263,671
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2016