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Last modified
1/29/2010 10:15:21 AM
Creation date
10/4/2006 10:24:35 PM
Metadata
Fields
Template:
Floodplain Documents
County
Pueblo
Otero
Bent
Community
Southeastern Colorado
Stream Name
Arkansas River
Title
Flood of June 1965
Date
4/1/1966
Prepared For
State of Colorado
Prepared By
US Army Corps of Engineers
Floodplain - Doc Type
Flood Documentation Report
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<br />f. 18June.- By the afternoon of the 18th, the low at the <br />500 millibar level had become ..eaier and had receded westward, re- <br />sulting in a ridge of high pressure over New Mexico, Colorado, and <br />Kansas. On the surface a weak stationary front extended NNE.S~' <br />through centxal Colorado and western New Mexico, with a strong high <br />pressure area centered over Illinois, east of the front. Asoutherly <br />flow of moist air still persisted on the ..est side of the high causing <br />thunderstorm activity over northern New Me%ico, eastern Colorado, and <br />western Kansas. <br /> <br />inches on 17 June and, by comparison with the recorder at Eastonville <br />3NW, most of the rain occurred from.2 p.llI. to 8 p.llI. fountatnre_ <br />pnrted 5.25 inches between 7 a.m. on the 17th and 7 a.m. on the 18th. <br />Supplemental precipitation reports inCluded rainfall amounts of 10.S <br />to 12.5 inches in the vicinity of Falcon (about 14 miles northeast of <br />Colorado Springs) on 17 June between 9 a.m. and 7 p.m. <br />b. ArKan8aa River abow John Mm>tin Dam.- A supplemental <br />rainfall location in southeastern Bent County (24 miles northwest of <br />Springfield) reported 3.8 inches from 9 a.m. on the 16th to 5 a.m. on <br />the 17th; 3.2 inches from 8 a.m. to 8 p.m. on the 17th; 3.4 inches <br />from 8 p.m. to 11 p.m. on the 11th, making a total of 6.6 inches from <br />8 a.m. to II p.m. on the 11th; and 3.1 inches from midnight to 5 p.m. <br />on the 18th. A supplemental rainfall report from a location 12 miles <br />west of La Junta indicated that 2.7 inches of rain fell in that vicin. <br />ity bet..een 7 p.m. and 10:30 p.m. on the 16th. <br /> <br />g. 19June.- At the 500 millibar level, the ridge of high <br />pressure was still the dominant feature over New Mexico, Colorado, and <br />Kansas, although the ridge had pivoted from a N-S direction to NE-SW. <br />At the surface, the stationary front had become a cold front and had <br />~oved eastward to southeastern Colorado by the end of the day. The <br />southerly flow of warm moist air persisted ahead of the front with re- <br />sultant thundersto~ activity over northeastern New Me~ico, southeastern <br />Colorado, and western Kansas. <br /> <br />c. upper Pu~atoire River.- The Weather Bureau substation <br />at Kim IS NNE recorded 5.64 inches on the 17th. The substation at <br />Troy 1 SE reported 4.02 inches from 6 p.m. on the 16th to 6 p.m. on <br />the 17th. A supplemental rainfalL report from nine miles southwest of <br />Trinidad indicated that 3.5 inches of rain occurred in one hour from <br />5 p.m. to 6 p.m. on the 17th. <br />d. ArkaneaE River bel"", John. Marli" tJam.- A supplemental <br />rainfall report over southern Prowers County (28 miles south_southeast <br />of Lamar) indicated 1S.5 inches of rainfall from midnight until 2 p.m. <br />on the 16th. Holly reported a 24-hour total of 11.08 inches at 6 a.m. <br />on the 17th. The gage at Granada recorded 5.38 inches on the 17th with <br />a maximum intensity of one inch in One hour. The station at Springfield <br />B S recorded 5.45 inches from midnight to noon on the 17th with an in- <br />tensity of two inches in one hour from 12:30 a.m. to 1:30 a.m. and 0.70 <br />inch in about five minutes around 5:30 a.". Two Buttes 1 Nl\'reported <br />9.21 inches from 6 p.m. on the 16th to 6 p.m. on the 17th. <br />S. RAfliFALL - NEil MEXICO.- A generally "U" shaped, heavy rainfall <br />pattern occurred over northeastern New Me~ico as shown on plate 4. A <br />13-inch center occurred abo~t 16 miles southwest of Raton, N. Me~. <br />Southward, a center of 12 inches occurred over southwestern Colfa~ <br />County and northwestern ~ra County, and a center of eight inche~ oc- <br />curred near Valmora. The center near Valmora had a five-inch lobe ex- <br />tending east and northeast to near Roy, N. Me~. A second eight-inch <br />center occurred 14 miles south of Grenville, N. Mex. The area in the <br />center of the pattern had less than two inches of rainfall. <br /> <br />h. 20 JIUIB.- The cold front extended from northeastern <br />Kansas to southwestern Kansas and then curved WNW as a weak stationary <br />front into northwestern Colorado. The surface high pressure area moved <br />southeastward into Georgia so that the inflow of air from the Gulf of <br />Mexico extended only as far west as Oklahoma and eastern Kansas. <br /> <br />4. RAINFALL - COLORADO._ During the storm period theN! were no <br />heavy rains in the Arkansas River Basin west of 105015' west longitude. <br />Daily amounts in this area varied from less than one inch to about 1.5 <br />inches. Heavy rains occurred OVer the upper fountain Creek and conti!!_ <br />uous areas and over the right bank tributaries in Colorado east of <br />Rocky ford. In southea5tern Colorado, there was an 18-inch total storm <br />center over southern Prowers County, and a 16-inch center OVer eastern <br />Prowers County. Several subcenters extended southwest to near Raton <br />New Me~ico. A. large area of less than two inches separa.ted the south- <br />eastern centers from the storm center nellrColorado Springs. An iso- <br />hyetal 'IIlap of the storm is shown on plate 4 and representative lIIass <br />rainfall c~rves are shown on pines 5 and fl. TabUlations of regular <br />reporting precipitation station" IInd of supplementary rainfall reports <br />are shoHll in tables 1 and 2. Reportin~ precipitation stations are <br />shown on plate~ 7 and 8. <br /> <br />. . a. UT;per POWltain C'x'eek.- In El Paso County, there ..ere <br />flve hlgh preclpitation centers which conSisted of two 14-inch centers <br />in the northern part along the Platte-Arkan$as divide, a 12-inch center <br />about 13 mlle" northeast of Colorado Sprin!!s, an 8-inch center about <br />15 miles south-southeast of COlorado Springs_ and II 9-lnch cent~r 10 <br />miles north-northeast of Colorado Springs. On 14 June Peterson AF8 <br />(six ~iles ellst-southeast of Colorado 5prin~"] reported 4.5n inches ~f <br />rain.. On 15 June, COlorado Springs had 2.47 incheS,of which 1.98 inches <br />fellln threehoun. !\yerRlJ1ch in northern E1 Paso County had 6.46 <br /> <br />a. Upper Canadian River Ballil1.- Maximum rainfall intensities <br />in inches for various durations as shown by the recorder at Raton WB <br />Airport are tabulated below: <br /> <br />, <br /> <br />, <br />
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