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Title: 2016 Old River Control Complex sedimentation data : supplement to Old River Control Complex sedimentation investigation (MRG&P Report No. 6)
Authors: Jones, Keaton E.
Abraham, David D.
McAlpin, Tate O.
Ganesh, Naveen B.
Keywords: Sediment transport
Sedimentation and deposition
Diversion structures (Hydraulic engineering)
Mississippi River
Publisher: United States. Army. Corps of Engineers. Mississippi Valley Division.
United States. Mississippi River Commission.
Coastal and Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: MRG&P;Tech Note No. 5
Abstract: The Old River Control Complex (ORCC) was designed and constructed to regulate the flow diversion from the Mississippi River to the Atchafalaya River. The amount of sediment diverted through the structures is also an important concern for all stakeholders. A 2011 U.S. Army Corps of Engineers (USACE) report from the New Orleans District (MVN) states in section 1.4.1 “House Document No. 478 of the 83rd Congress, 2nd Session dated 1954 stated that the distribution of flow and sediment in the Mississippi and Atchafalaya Rivers was in desirable proportions and should be so maintained. The controlled distribution for future major flows in approximately the same proportions as that which occurred in 1950 was authorized. That is, 70 percent of flow would be carried by the Mississippi River and 30 percent would be carried by the Atchafalaya River of the total annual Old River latitude flow” (USACE 2011). Many studies have been conducted to help determine how the structures impact the sediment regime in the vicinity of the ORCC and the corresponding impacts to downstream river reaches. Heath et al. (2015) provided an evaluation of the sediment diverted by using data collection, geomorphic analysis, and multi-dimensional numerical models. The data collection effort for that report consisted of seven data collection trips between early February of 2010 and late May of 2011 (Table 1). Data were collected at 11 locations including sites on the Mississippi, Red, and Atchafalaya Rivers. Descriptions of the sites are provided in Table 2 along with the number of data collections for each site and a map of the sites in Figure 1. Data were not collected at every site for every trip. The data reported in Heath et al (2015) consisted of water and suspended sediment flux measurements, bottom bed samples, and bed-load measurements. In late 2015, the MVN and Mississippi Valley Division funded an additional data collection effort during the winter 2016 flood. These new data are reported below and are meant to supplement and expand the data provided in Heath et al. (2015).
Description: MRG&P Tech Note
Gov't Doc #: MRG&P Tech Note No. 5
Rights: Approved for Public Release; Distribution is Unlimited
Appears in Collections:MRG&P Tech Note

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