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20 Sep 2023
Mapping and Localization Within a Mock Sewer System
Abstract: Herein, we explored a robot’s ability to localize and map, both in simulation and on a physical robot, within a mock sewer system. Mapping and localization techniques were first developed and tested in simulation and were then transitioned to the actual robot for additional physical testing. Several odometry and simultaneous localization and mapping (SLAM) techniques, including gmapping, SLAM toolbox, elevation mapping, and RTABMap, were evaluated for this particular environment. The results of the odometry and the various SLAM approaches are discussed in detail.
20 Sep 2023
Fall release from Rathbun Lake to the Chariton River Basin not anticipated
Conditions are unfavorable for the U.S. Army Corps of Engineers to conduct a fall release, also known as flushing flow releases, due to the current pool elevation of 903.4 feet at Rathbun Lake, which is more than half a foot below multipurpose level, as of September 19, 2023. Releases this fall are not anticipated.
20 Sep 2023
Federal water managers announce public information sessions about post-September 2024 Columbia River Treaty operations
How the United States uses reservoir space in Canada changes on September 16, 2024, from the high degree of structure and control of flows coming across the border from Canada experienced over the last 60 years under the Columbia River Treaty, to an operation that increases the uncertainty of those flows. The U.S. Army Corps of Engineers (USACE) and Bureau of Reclamation (Reclamation) will hold four virtual public information sessions in September and October to begin informing the public about the potential changes.
20 Sep 2023
USACE waives day use fees, invites volunteers to participate in National Public Lands Day September 23
The U.S. Army Corps of Engineers announced yesterday that it will waive day use fees normally
20 Sep 2023
USACE seeks comments on proposed work in Malletts Bay in Colchester, Vermont
The U.S. Army Corps of Engineers, New England District received a permit application to conduct work
19 Sep 2023
NAVIGATION NOTICE: SWL 23-56 - McClellan-Kerr Arkansas River Navigation System
Mariners are advised that crews will be placing rip rap around the Van Buren Railroad Bridge (NM 300.8). Work will be performed daily from 6 a.m. to 6 p.m., September 25 through October 4, 2023. Mariners may contact the onsite workboat, M/V Pine Bluff, on VHF-FM channel 16 or 78 or by phone at (318) 452-5448. Mariners are advised to transit the area with caution.
19 Sep 2023
Navigation Notice: SWL 23-55 McClellan-Kerr Arkansas River Navigation System
Due to shoaling, mariners are advised that until further notice, both upbound and downbound tows should favor the short wall in the downstream approach at Montgomery Point Lock and Dam (NM 0.5). Also, a 70-ft width restriction is in place to reduce the risk of grounding in the area. Crews are being dispatched to perform digging and clamming operations in the reach. A subsequent navigation notice will be issued once the shoaling has been cleared and the 70-ft width restriction has been lifted.
19 Sep 2023
U.S. Army Corps of Engineers invites volunteers to plant native wildflowers and grasses at W.P. Franklin South Recreation Area on National Public Lands Day, Saturday, Sept. 23
The U.S. Army Corps of Engineers Jacksonville District invites the public to participate in a day of service at the W.P. Franklin South Lock and Dam Recreation Area near Alva on National Public Lands Day, Saturday, September 23, from 7:30 a.m. through 12 p.m. Activities include planting 15,000 wildflowers and grasses in an area that was previously a large open field, to provide habitat restoration and educational opportunities for the local community.
19 Sep 2023
U.S. Army Corps of Engineers & City of Fenton, Mo to hold in-person public meeting for the CAP 205: Meramec River near Fenton, Mo Flood Risk Management Study
The U.S. Army Corps of Engineers, St. Louis District, in coordination with the non-Federal sponsor, the City of Fenton, Missouri is hosting an in-person public meeting which is now postponed until November 2023 (TBD), to present general study information, to share the content of the draft feasibility report, and to gather feedback on the Tentatively Selected Plan.
19 Sep 2023
Army Corps of Engineers waives fees and invites volunteers to participate in National Public Lands Day, Sept. 23
The U.S. Army Corps of Engineers announced today that it will waive day-use fees typically charged at boat launch ramps and swimming beaches at its recreation areas nationwide in recognition of National Public Lands Day (NPLD) on Saturday, Sept. 23.