The Loagrann river was formed by the joining of three, tributaries, Skull Creek, Whitewater and unnamed, flowing from the northern part of the Greypeak Mountains. Flowing southwest it joined the Greyflow river about halfway between Llorkh and the junction of the Greyflow and the Delimbiyr rivers.
- Deadstone Cleft: This deep canyon, through which the Loagrann flowed, housed cave-complex inhabited by a clan of stone giants.
- Ed Greenwood (1993). Volo's Guide to the North. (TSR, Inc), p. 214. ISBN 1-5607-6678-6.
- slade, et al. (April 1996). “The Wilderness”. In James Butler ed. The North: Guide to the Savage Frontier (TSR, Inc.), p. Maps. ISBN 0-7869-0391-0.
- Christopher Perkins (September 6, 2016). Storm King's Thunder. Edited by Kim Mohan, Michele Carter. (Wizards of the Coast), p. 145. ISBN 978-0786966004.