Owners Dues. All Owners will receive an invoice within the first two weeks of January. Dues are due by January 31st. Owners who need to make payments must have arrangements made in writing by Jan. 31st. Acceptable arrangements will include first payment being made no later than Feb. 15th, and payment in full by June 1st. Any missed payments will cause the account to become delinquent. Any unpaid balance will begin accruing interest charges starting Feb. 1st and any dues remaining unpaid as of June 1st will be sent to collections. If you do not receive your invoice, please contact the Treasurer. Payments should be sent to Riverwalk Owners Association, PO Box 25, Spokane Valley, WA. 99016. Interest on unpaid balance is 1.5% per month. Any question or concerns, please contact the treasurer.