CCP 03-15-1999 - Laserfiche WebLink

Home Browse Search

I I I I I I I It I I I I I I I INTRODUCTION BRW Inc., in conjunction with the Public Works Director have completed a comprehensive, city wide drainage survey. The goals of the survey are to investigate and map as necessary existing drainage ways throughout the city, identify existing and potential problem areas and determine repair priorities and a maintenance program to address them. Prior to this study and report, the City did not have an up-to-date detailed inventory of drainage infrastructure including drainage subwatersheds, existing storm sewer, natural wetlands, lakes, ditches, culverts and ponds and their interaction. Because of its hilly terrain and numerous lakes and wetlands, Arden Hills has an extensive collection of natural and manmade drainage ways. The entire city lies within the Rice Creek Watershed District and is subject to the policies of that organization with respect to storm water management. The purpose of this field survey and report is to generate a masterplan documenting existing drainage ways and drainage infrastructure while identifying problem areas needing maintenance attention. This report also recommends possible measures which could be taken by the City to address some of the more significant problem areas. Potential storm water detention/retention pond locations are also identified in this report. The purpose of detention/retention ponds is to increase the water quality of the of storm water runoff and to minimize discharge rates of the storm water into the receiving waters. The Arden Hills Public Works Director and BRW conducted the field survey throughout the summer and fall of 1998. The field survey included meetings with residents who have expressed specific drainage concerns and weekly "ditch" walks to see first-hand the condition of existing ditches, ponds, culverts etc. Sections of the city were selected and "walked" until all the city drainage ways were surveyed and existing and potential drainage problems were identified. The TCAAP property was not included in this survey. BRW then compiled notes from the field survey, utilized as-built plans when available and generated a drainage system masterplan map illustrating the existing storm drainage infrastructure in the City and highlighting the problem areas encountered in the field survey. Included with this report is a comprehensive drainage map that shows drainage areas, lakes, ponds, wetlands and drainage ways throughout the City. The map also includes the existing municipal storm water system and some Ramsey County and MnDOT drainage culverts. 2