Document and Entity Information Document - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2019	Jan. 23, 2020	Apr. 30, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	HIGHWATER ETHANOL LLC
Entity Central Index Key	0001371451
Current Fiscal Year End Date	--10-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Document Type	10-K
Document Period End Date	Oct. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding (in shares)		4,807
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 41,550