Laserfiche WebLink
<br /> <br />SU~~~ARY OF FLOOD SITUATION <br /> <br />can be dangerous. Any overbank flows on the Big Thompson River <br />flood plain may be dangerous and should be avoided or approached <br />with caution. <br /> <br />The Big Thompson River basin is located in north central <br />Colorado. The basin extends 60 mi les eastward from the continental <br /> <br />* <br /> <br />* <br /> <br />* <br /> <br />* <br /> <br />* <br /> <br />* <br /> <br />FLOOD CONTROL AND DEFENSE at Loveland consists of weather bureau <br />reports and local watch on stream stages during crucial storm peri- <br />ods. Other than localized erosion protection of the stream banks <br />. , <br />there are no channel improvements which "ould materially alter. flood <br />conditions, <br /> <br />divide to the <br />from Greeley. <br />long, 16 miles <br />utary area. <br /> <br />South Platte River a few mi les southwest and upstream <br />The drainage basin upstream from Loveland is 37 m; les <br />wide and is composed of mountain and foot hills trib- <br /> <br />THE CAUSE OF FLOODS at Loveland is usually intense rainfal I in the <br />late spring and summer seasons with the possibility of rainfal I run- <br />off being increased by snowmelt in May and June. <br /> <br />* <br /> <br />* <br /> <br />* <br /> <br />GREAT FLOODS have occurred at Loveland in the past. The largest <br />known flood occurred on 3 August 1951 with an estimated discharge <br />of 22,000 cubic feet per second (c.f.s.l. The second largest <br />recorded flood occurred 4 August 1949 and had a discharge of 7,750 <br />c.f.s. Other floods may have been larger but there is no record <br />of their discharge at Loveland. Historically, floods have occurred <br />on an average of once every 6 years. <br /> <br />* * <br /> <br />* <br /> <br />, <br />! <br /> <br />FLOOD D~~GES in the past have occurred on cropland and at farm <br />homes, irrigation works, gravel mining faci lities, and transporta- <br />tion facilities. <br /> <br />* <br /> <br />* <br /> <br />* <br /> <br />DURATION OF FLOODING at Loveland is from a few hours up to a period <br />of 2 days. <br /> <br />,. <br />I <br /> <br />* <br /> <br />* <br /> <br />* <br /> <br />HAZARDOUS CONDITIONS would occur during large floods due to the <br />rapidly rising stream, high velocities, and deep flows. Velocities <br />greater than 3 feet per second, combined with depths of 2 feet or <br />more are considered hazardous, but lesser velocities and depths <br /> <br />2 <br /> <br />