A 650 year-old Douglas-fir stands just east of Dillon Reservoir. It and 15 other very old trees were sampled to develop the Dillon (DIL) tree-ring chronology, which has been used to reconstruct the annual flow of the Blue River.
Update July 2009:
The Colorado TreeFlow web pages have been incorporated into the newly expanded
TreeFlow web resource.
TreeFlow homepage: http://treeflow.info/
The new TreeFlow is organized by
major hydrologic basin, so the streamflow reconstructions for Colorado and related
information can be accessed through the appropriate basin home page:
The streamflow reconstructions for Colorado archived at the NOAA World Data Center for Paleoclimatology are listed below. (These, and additional reconstructions, are also archived through the new TreeFlow pages above)
South Platte Basin
Upper Colorado Basin
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Please see the Paleoclimatology Contact Page or the NCDC Contact Page if you have questions or comments.