LOCATION.-- Lat 41°20'31", long 88°08'09" (NAD of 1983), in NW1/4NE1/4SE1/4 sec. 13, T.33N., R.9E, Hydrologic Unit 07120001, Piezometer PZ8S, about 2 miles north of Wilmington. Owner: U.S. Forest Service, Midewin National Tallgrass Prairie. | |
AQUIFER.-- Glacial drift of Quaternary age. | |
WELL CHARACTERISTICS.-- diameter 1.0 inch, depth 7.8 feet, cased to 5.3 feet, slotted screen, observation. | |
PERIOD OF RECORD.-- | |
GROUND-WATER LEVELS: October 2003 through September 2004. | |
INSTRUMENTATION.-- Electronic data logger--60-minute recording. | |
DATUM.-- Land-surface datum is 557.34 ft above NAVD of 1988. Measuring point: Top of PVC casing, 3.3 ft above land-surface datum. | |
REMARKS.-- Piezometer open to fine-grained deposits. | |
EXTREMES FOR PERIOD OF RECORD.-- | |
GROUND-WATER LEVELS: Highest recorded water level, 0.80 ft above land surface datum, Aug. 29, 2004; lowest recorded, 2.42 ft below land surface datum, Aug. 17, 2004. | |
REMARKS FOR CURRENT YEAR.-- Measured water levels during the approximate period of December through late February are considered estimated levels. During much of this period, the ground-water surface within the piezometer was frozen. | |
| DEPTH TO WATER LEVEL, FEET BELOW LAND SURFACE, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004
DAILY MAXIMUM VALUES | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
| 1 | --- | 1.27 | -0.61 | -0.41 | 1.71 | -0.37 | -0.55 | -0.09 | -0.69 | 0.15 | 2.04 | -0.70 |
| 2 | --- | 1.23 | -0.57 | -0.43 | 1.63 | -0.36 | -0.53 | -0.09 | -0.67 | 0.75 | 2.13 | -0.67 |
| 3 | --- | 0.07 | -0.57 | -0.41 | 1.44 | -0.34 | -0.51 | -0.03 | -0.63 | 0.89 | 2.19 | -0.65 |
| 4 | --- | 0.07 | -0.56 | -0.41 | 1.40 | -0.34 | -0.46 | 0.05 | -0.59 | -0.25 | 0.79 | -0.63 |
| 5 | --- | -0.19 | -0.60 | -0.37 | 1.35 | -0.46 | -0.43 | 0.25 | -0.55 | -0.29 | 1.07 | -0.60 |
| 6 | --- | -0.24 | -0.61 | -0.18 | 1.18 | -0.65 | -0.40 | 0.53 | -0.51 | -0.25 | 1.40 | -0.58 |
| 7 | --- | -0.22 | -0.60 | -0.10 | 1.14 | -0.64 | -0.36 | 0.58 | -0.45 | -0.20 | 1.60 | -0.55 |
| 8 | --- | -0.19 | -0.59 | -0.08 | 1.13 | -0.62 | -0.32 | 0.35 | -0.39 | -0.11 | 1.75 | -0.52 |
| 9 | --- | -0.16 | -0.59 | -0.07 | 0.98 | -0.60 | -0.27 | 0.60 | -0.34 | -0.05 | 1.89 | -0.49 |
| 10 | --- | -0.16 | -0.62 | -0.02 | 0.94 | -0.56 | -0.23 | 0.68 | -0.34 | -0.34 | 1.97 | -0.46 |
| 11 | --- | -0.18 | -0.64 | 0.01 | 0.96 | -0.53 | -0.17 | 0.73 | -0.39 | -0.32 | 2.06 | -0.43 |
| 12 | --- | -0.14 | -0.57 | -0.12 | 1.01 | -0.50 | -0.11 | 0.93 | -0.54 | -0.28 | 2.11 | -0.40 |
| 13 | --- | -0.09 | -0.54 | -0.26 | 1.00 | -0.48 | -0.04 | 0.02 | -0.76 | -0.24 | 2.18 | -0.36 |
| 14 | --- | -0.07 | -0.54 | -0.26 | 1.07 | -0.49 | 0.05 | -0.32 | -0.75 | -0.16 | 2.25 | -0.33 |
| 15 | --- | -0.07 | -0.54 | -0.11 | 1.15 | -0.47 | 0.26 | -0.53 | -0.73 | -0.07 | 2.32 | -0.30 |
| 16 | --- | -0.07 | -0.58 | -0.05 | 1.31 | -0.46 | 0.50 | -0.50 | -0.71 | 0.02 | 2.37 | -0.36 |
| 17 | --- | -0.09 | -0.50 | -0.04 | 1.39 | -0.46 | 0.67 | -0.47 | -0.68 | 0.29 | 2.42 | -0.33 |
| 18 | --- | -0.16 | -0.45 | 0.08 | 1.34 | -0.45 | 0.91 | -0.46 | -0.64 | 0.77 | 2.37 | -0.29 |
| 19 | --- | -0.61 | -0.40 | 0.72 | 0.70 | -0.42 | 1.11 | -0.47 | -0.60 | 1.00 | 1.46 | -0.25 |
| 20 | --- | -0.61 | -0.34 | 1.08 | -0.16 | -0.42 | 1.11 | -0.44 | -0.56 | 1.15 | 1.50 | -0.20 |
| 21 | --- | -0.60 | -0.32 | 1.22 | -0.26 | -0.35 | 0.05 | -0.42 | -0.54 | 1.27 | 1.33 | -0.14 |
| 22 | 1.52 | -0.58 | -0.47 | 1.45 | -0.28 | -0.32 | 0.20 | -0.40 | -0.53 | 1.36 | 1.52 | -0.09 |
| 23 | 1.58 | -0.57 | -0.49 | 1.59 | -0.31 | -0.29 | 0.43 | -0.45 | -0.49 | 1.56 | 1.65 | --- |
| 24 | 1.61 | -0.73 | -0.42 | 1.57 | -0.34 | -0.29 | --- | -0.45 | -0.45 | 1.68 | 1.68 | --- |
| 25 | 1.60 | -0.72 | -0.36 | 1.68 | -0.36 | -0.33 | --- | -0.44 | -0.40 | 1.79 | 0.46 | --- |
| 26 | 0.75 | -0.71 | -0.30 | 1.71 | -0.37 | -0.34 | --- | -0.48 | -0.34 | 1.85 | -0.05 | --- |
| 27 | 0.87 | -0.70 | -0.36 | 1.62 | -0.37 | -0.38 | -0.05 | -0.45 | -0.28 | 1.93 | -0.25 | --- |
| 28 | 0.88 | -0.68 | -0.43 | 1.52 | -0.37 | -0.35 | 0.10 | -0.40 | -0.24 | 2.01 | -0.30 | --- |
| 29 | 1.06 | -0.65 | -0.46 | 1.47 | -0.37 | -0.48 | 0.34 | -0.36 | -0.15 | 2.07 | -0.78 | --- |
| 30 | 1.14 | -0.65 | -0.44 | 1.58 | --- | -0.48 | 0.13 | -0.34 | -0.05 | 2.07 | -0.75 | --- |
| 31 | 1.25 | --- | -0.43 | 1.70 | --- | -0.56 | --- | -0.69 | --- | 1.89 | -0.72 | --- |
| MEAN | --- | -0.24 | -0.50 | 0.51 | 0.68 | -0.44 | --- | -0.11 | -0.50 | 0.71 | 1.34 | --- |
| MAX | --- | 1.27 | -0.30 | 1.71 | 1.71 | -0.29 | --- | 0.93 | -0.05 | 2.07 | 2.42 | --- |
| MIN | --- | -0.73 | -0.64 | -0.43 | -0.37 | -0.65 | --- | -0.69 | -0.76 | -0.34 | -0.78 | --- |