Laserfiche WebLink
<br /> <br />:i <br /> <br />II. MAJOR OFFSITE BASINS <br /> <br />2.1 General <br /> <br />The Town of Otis is situated at the confluence of the <br />Brunker Creek basin and an unnamed basin tributary to <br />Brunker Creek. Total tributary area at the confluence of <br />Brunker Creek and the unnamed basin is approximately 94 <br />square miles. Both the Brunker Creek basin and the unnamed <br />basin flow in a general northeasterly direction and are <br />tributary to Surveyor Creek. A discussion of the <br />characteristics of the two basins follows. A basin map <br />(Exhibit A) which delineates the tributary basins and sub- <br />basins considered in this study is included in the <br />backfolder. <br /> <br /> <br />2.2 Brunker Creek <br /> <br />There are approximately 81.20 square miles tributary to <br />Brunker Creek above the confluence with the unnamed basin. <br />Of this total tributary area, 62.75 square miles drains into <br />a dry lake bed which shall be referred to as Brunker Lake. <br />During rainfall events substantially more extreme than the <br />lOa-year rainfall, Brunker Lake fills, overflows, discharges <br />into Haverland Pond (see Exhibit A) and then flows into the <br />South portion of Otis. This portion of the Brunker Creek <br />basin was, in the final analysis, considered to be non- <br />tributary for the purposes of this study and is not included <br />on the basin map. Justification for this assumption is <br />contained in Section 2.4.2, Hydrology. <br /> <br />" <br />" <br /> <br />'I <br />I <br /> <br />:1 <br />" <br /> <br />Of the remaining 18.4 square miles of the Brunker Creek <br />Basin, identified as sub-basins SW I, SW II, SW III, SW IV, <br />and S on the basin map, approximately 17 square miles (SW I, <br />SW II, SW III, and the majority of SW IV) drains into <br />Haverland Pond. This portion of the Brunker Creek basin <br />will be referred to throughout the remainder of this report <br />as the southwest basin. During large storms, Haverland Pond <br />fills, then overflows into Otis. Based on conversations with <br />local residents, it appears that Haverland pond may have <br />enough volume to totally retain runoff generated from <br />upstream areas for most minor events more frequent than the <br />la-year recurrence interval. The remaining area drains <br />directly through Otis. <br /> <br />, <br /> <br />,I <br /> <br />:', <br /> <br />3 <br />