Arc Surveying & Mapping, Inc.

1. ARC SURVEYING & MAPPING, INC.
PROFESSIONAL SURVEYING SOLUTIONS SINCE 1986
www.arcsurveyors.com
5567 Commander Dr., Ste 101 5202 San Juan Ave 4160 Minton Road
Arlington, TN 38002 Jacksonville, FL 32210 Melbourne, FL 32904
(901) 867-5333 (904) 384-8377 (321) 728-8688
USACE – Red River Louisiana
Under a subcontract agreement to Continental Engineering, Inc. of Memphis, Tennessee, Arc
Surveying & Mapping, Inc. performed a multibeam swath survey of 110 miles of the Red River,
Louisiana, between river miles 7.0 and 235.0. During the bank-to-bank multibeam swath
survey, water surface elevations were recorded at the beginning, middle and end of each
workday at predetermined locations along the river. Water surface data included the location,
date and time of each reading in order to adjust depth-soundings to the appropriate vertical
control. The survey was positioned using DGPS. Multibeam depth sounder calibrations were
performed at the beginning and end of each survey day using a standard bar check and a sonar
velocity profiler. Multibeam data were collected in one-mile reaches to better control data
processing and submission to client. Horizontal control (Louisiana North State Plane Coordinate
System NAD83) and vertical control (NGVD29) were provided by the Vicksburg District USACOE.
Depth Soundings were collected using a Reson 8124 multibeam swath sounder operating at 200
kHz. The 200kHz transducer contains eighty one beams with 1.5 degree spot spacing. Bottom
coverage is 120 degrees or approximately 3.5 times the depth. Trimble DGPS was used for
positioning, receiving differential GPS locations from the closest United States Coast Guard
(USCG) NavBeacon. Data are collected and processed using HySweep Software.
Specialized Experience/Relevance to this Project:
▪Red River Experience
▪ACOE Experience
▪Multibeam Swath Survey Experience
▪Single Beam Cross Section Experience

2. ARC SURVEYING & MAPPING, INC.
PROFESSIONAL SURVEYING SOLUTIONS SINCE 1986
www.arcsurveyors.com
5567 Commander Dr., Ste 101 5202 San Juan Ave 4160 Minton Road
Arlington, TN 38002 Jacksonville, FL 32210 Melbourne, FL 32904
(901) 867-5333 (904) 384-8377 (321) 728-8688