PROGRAMS AND PLANS--Dendrogeomorphic Techniques In Reply Refer To: August 14, 1991 WGS-Mail Stop 415 OFFICE OF SURFACE WATER TECHNICAL MEMORANDUM NO. 91.10 SUBJECT: PROGRAMS AND PLANS--Dendrogeomorphic Techniques Dendrogeomorphic techniques have provided useful approaches to several successful cooperatively-funded projects in the Southeast and Northeast Regions. Dendrogeomorphic techniques refers to the use of tree-ring or dendrochronologic investigations in the inter- pretation of geomorphic form and process. Sediment deposition, in particular, and in many cases erosion are processes especially suitable for dendrogeomorphic investigations. The attached list of salient papers describes the use and illustrates potential applications of dendrogeomorphic analysis. Substantial information has been obtained using these techniques to measure bank-accretion rates, flood-plain deposition, sedimentation in wetlands, hill-slope erosion, and debris-flow frequency and deposition. Dendrogeomorphic techniques in wetlands are particularly useful, in that no other methodology may provide detailed information on spatial and temporal aspects of sediment deposition. The techniques are simple and relatively easy to conduct and have been documented in papers listed in the attachment. Copies of the publications may be obtained (preferably) from the publication outlet indicated in the references, from the author, or from the Office of Surface Water. Currently Hupp's NRP/NR project is involved in studies that use dendrogeomorpic analysis in combination with sediment chemistry to investigate the transport and storage of nonpoint-source pollution. Tom Yanosky is studying the timing and uptake of trace elements in fluvial environments by use of an element analysis of wood tissue. Although element analysis is still in the basic research phase, it promises to provide information about sediment chemistry, shallow ground-water contamination, and saltwater encroachment. Charles W. Boning Chief, Office of Surface Water Attachment WRD DISTRIBUTION: A, B, S, FO, PO REFERENCES Bazemore, D.E. and Hupp, C.R., 1991, Bottomland sedimentation near highway crossings: 5th Federal Interagency Sedimentation Conference, v. 1, sec. 4, Proceedings, p. 48-54. Hupp, C.R., 1987, Determination of bank widening and accretion rates along modified West Tennessee streams: U.S. Department of Energy Conference-8608144. ______1988, Plant ecological aspects of flood geomorphology and paleoflood history: in Baker and others (eds.) Flood Geomorphology, John Wiley and Sons Inc., p. 335-356. Hupp, C.R. and Simon, Andrew, 1986, Vegetation and bank-slope development: 4th Federal Interagency Sedimentation Conference, v. 2, Proceedings, p. 83-91. Hupp, C.R, Osterkamp, W.R., and Thornton, J.L, 1987, Dendrogeomorphic evidence and dating of recent debris flows on Mount Shasta, northern California: U. S. Geological Survey Professional Paper 1396-B. Hupp, C.R. and Carey, W.P., 1990, Dendrogeomorphic approach to estimating slope retreat, Maxey Flats, Kentucky: Geology, v. 18, p. 658-661. Hupp, C.R. and Morris, E.E., 1990, A dendrogeomorphic approach to measurement of sedimentation in a forested wetland, Black Swamp, Arkansas: Wetlands, v. 10, p. 107-124. Hupp, C.R. and Bazemore, D.E., 1991, Dendrogeomorphic analysis of wetland sedimentation: 5th Federal Interagency Sedimentation Conference, v. 1, sec. 4, Proceedings, p. 40-47. Hupp, C.R. and Simon, Andrew, 1991, Bank accretion and the development of vegetated deposition surfaces along modified alluvial channels: Geomorphology, v. 4, (in press). Sigafoos, R.S., 1964, Botanical evidence of floods and floodplain deposition: U.S. Geological Survey Professional Paper 485-A. Wilson, K.V., Jr., Turnipseed, D.P., 1990, Channel and bank stability of Wolf Creek and a tributary at U.S. Highway 45 near Wheeler, Prentiss County, Mississippi: U.S. Geological Survey Open-File Report 90-110.