Revision History for U.S. Geological Survey Water-Resources Investigations Report 89-4129
G.L. Patterson
Ground-water levels and quality at Crex Meadows Wildlife Area, Burnett County, Wisconsin
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Posted online in 1990
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Revised and reposted online July 25, 2022, as version 2.0

Wells 8503, 8504, 8505, and 8506 were found to be tied to a reference point with a surveyed elevation that was inaccurately high. As a result, the land surface datum at the well used to convert groundwater levels to elevations in 1986 and 1987 was also too high for these four wells. The land surface datums at the four wells were recomputed with the corrected reference point elevations.
The elevation corrections for the four wells are as follows:
Well 8503: -9.13 ft
Well 8504: -9.14 ft
Well 8505: -9.11 ft
Well 8506: -9.11 ft
The locations of these four wells are shown in figure 2 of the subject report.
An "Errata" section has been added at the back of the report. It includes annotated copies of figures 4-7, which describe the effects of the elevation corrections for the four wells. For figures 4 and 5, the well elevation changes would only affect the portion of the contours generated from data at these four locations. In 2021, the entire contour map cannot be redrawn without the full set of original data used to generate the contours.
The original contour maps are shown in figures 4 and 5 on pages 7 and 8. The affected areas make up about 25 percent of the mapped area. Copies of figures 4 and 5 are provided in the "Errata" section, and the four wells have been plotted therein. The groundwater-level elevations depicted by contours at these four wells shown in figures 4 and 5 would have been affected by the same corrections as above. The shading on the maps indicates the area affected by the recomputed elevations. The parts of these contour maps outside the shading are assumed to be accurate.
Shading added to text in the original report indicates discussions that might be affected by the recomputed elevations and changes in contours. The following four discussions could be affected:
(1) comparisons in the "Water-Levels during 1986 and 1987" section on page 5,
(2) part of the "Water-Level Fluctuations" section discussing the relative levels in the 1930s and the 1980s on page 10,
(3) the conclusions about the comparisons between the contour maps in the "Summary and Conclusions" section on page 14, and
(4) the summary of this information in the "Abstract" on page 1.
Because revised contours could not be drawn in 2021, it is unknown the degree to which these updates affect the statements in the sections listed above, but the effects are likely limited because the updated well datum elevations affect about 25 percent of the mapped area. The remainder of each map outside the shaded area and conclusions drawn from the maps (figs. 4 and 5) are considered accurate, and the overall conclusions in the report are likely unaltered by this update.
Data from well 8504 were graphed in figures 6 and 7 on pages 9 and 10. The tick labels on the vertical scales for these two graphs have been revised to account for the well datum change.
Suggested citation of U.S. Geological Survey Water-Resources Investigations Report 89-4129, Version 2.0
Patterson, G.L., 1990, Ground-water levels and quality at Crex Meadows Wildlife Area, Burnett County, Wisconsin (ver. 2.0, July 2021): U.S. Geological Survey Water-Resources Investigations Report 89-4129, 25 p., https://doi.org/10.3133/wri894129.
Revision contributor: Megan J. Haserodt