Please use this identifier to cite or link to this item:
https://hdl.handle.net/11681/4552Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor | Hydraulics Laboratory (U.S.) | - |
| dc.contributor | United States. Army. Corps of Engineers. Mobile District | - |
| dc.contributor | Environmental and Water Quality Operational Studies (U.S.) | - |
| dc.contributor.author | Wilhelms, Steven C. | - |
| dc.date.accessioned | 2016-03-16T22:10:07Z | - |
| dc.date.available | 2016-03-16T22:10:07Z | - |
| dc.date.issued | 1985-01 | - |
| dc.identifier.uri | http://hdl.handle.net/11681/4552 | - |
| dc.description | Technical Report | - |
| dc.description | Abstract: Gas transfer at several Corps of Engineers navigation locks was evaluated relative to effects on downstream dissolved oxygen and dissolved nitrogen concentrations. In-lock measurements indicated that very little oxygen uptake occurred during lock filling. Measurements of dissolved oxygen in the release water indicated that, in general, lock releases improve or maintain existing downstream water quality. At some locks where the downstream bulkhead slots were open to the atmosphere, significant air entrainment occurred downstream of the emptying valve during releases. The air and water mixture and hydraulic conditions in the downstream release conduits caused significant oxygen uptake and even oxygen supersaturation. Simultaneously, nitrogen supersaturation occurred but at levels that did not appear to be detrimental to aquatic biota. | - |
| dc.publisher | Environmental Laboratory (U.S.) | - |
| dc.publisher | Engineer Research and Development Center (U.S.) | - |
| dc.relation | http://acwc.sdp.sirsi.net/client/en_US/search/asset/1036804 | - |
| dc.rights | Approved for public release; distribution is unlimited. | - |
| dc.source | This Digital Resource was created from scans of the Print Resource | - |
| dc.subject | Dissolved nitrogen | - |
| dc.subject | Dissolved oxygen | - |
| dc.subject | Navigation locks | - |
| dc.subject | Reaeration | - |
| dc.subject | Locks | - |
| dc.subject | Hydraulic structures | - |
| dc.subject | Water quality | - |
| dc.title | Reaeration at navigation locks | - |
| dc.type | Report | en_US |
| Appears in Collections: | Technical Report | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| TR-E-85-1.pdf | 4.73 MB | Adobe PDF |  View/Open |