FLOOD02473

• County: Weld
• County: Logan
• Basin: South Platte
• Title: A Post Evaluation of Rainfall Reports Associated with Pawnee Creek Flood of July 29-30, 1997 in Eastern Weld and Western Logan Countie in Northeastern Colorado
• Date: 8/1/1998
• Prepared For: Weld County/Logan County
• Prepared By: CSU
• Floodplain - Doc Type: Flood Documentation Report

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3) Interviews with residents not previously surveyed

While conducting this field survey, I encountered a number of people who either had not
been interviewed soon after the storm or whose reports were considered inconsequential.
for storm documentation. Some additional data were uncovered, predominately from
areas surrounding but outside of the region of maximum rainfall.

The following is a summary of supplemental reports that I obtained.

Harold Weisbrook

T llN R 58W Sec 16 NE

Harold is an official National Weather Service Cooperative Observer. He had a great
view of the storm, but only received 0.05 inches on the 29th. For the preceding day
ending at 7:00 AM on the 29th, he measured 0.96. He particularly remembered an
intense storm just a few miles east of him during the late afternoon. He drove north and
then east and found water flowing over the road on WCR 132 already soon after 4:00 PM
on the 29th. Then, during the evening he was amazed to watch the storm clouds build
rapidly back toward southeast until sunset. Originally, the storm clouds were east and
southeast of his farm, but eventually they extend around to the southwest of his location
down beyond the Pawnee Buttes. Confidence rating = A

Gary Shefiler
65295 WCR 135, New Raymer

T I1N R 57 W Sec 6 SE

He was very thorough and detailed and remembered the day well. He remembered the
storm building just east of him during the afternoon along the ridge north ofWCR 132, It
eventually backed right over his place. The heaviest rains fell 3-4 PM, but more rain fell
during the evening. He recalled a lot of lightning but no hail. He remembered 3" of rain
at his place, but his wife's notes said 5" (which is also what Harold Weisbrook had said),
Their notes indicated that 1.4" of rain had fallen the previous evening (28th).

He also had several gauges on range land several miles east of his house.
Location Daily rainfall ending 29th AM 30th AM
T 12N R 56W Sec 22 1.5" 6"+
T 12N R 56W Sec 23 1.8" 6"+
T 12N R 56W Sec 36 1.7" 3.5"

These locations were given to me quickly over the phone, so they should be verified
before being used in formal documents. Overall confidence in these reports "A" if verified
with observer's personal notes.

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