20 Dec 2021

Lake Superior Maritime Visitor Center transitions to winter schedule

DULUTH, Minn., – The U.S. Army Corps of Engineers is transitioning the operating hours of the Lake Superior Maritime Visitor Center in Canal Park to its winter schedule after the holidays. The Detroit District’s Duluth Area Office Visitor Center winter schedule will begin the week of Jan. 16, 2022 and will be open Fridays, Saturdays and Sundays from 10:00 a.m. to 4:30 p.m. The Visitor Center will be open at the following dates and times during the holidays: • Dec. 20, 23, 27 and 30 from 10:00 a.m. to 4:30 p.m. • Jan. 3, 6-10 and 14-16 from 10:00 a.m. to 4:30 p.m.

16 Dec 2021

USACE researchers collaborate with Native American tribes to improve wildrice productivity

U.S. Army Corps of Engineers (USACE) researchers are working with the Lac Vieux Desert Band of Lake Superior Chippewa Indians and other Native American tribes to help improve wildrice (Zizania palustris) productivity. The U.S. Army Engineer Research and Development Center (ERDC) work is supporting two six-year USACE Detroit District Planning Assistance to States studies. Wildrice, or “manoomin” in the Anishinaabe or Ojibwe language, is found in fringe and riparian wetlands along lakes and rivers in the Great Lakes region. It is culturally significant and an important food source for Great Lake region Native American tribes. Wildrice is also a vital part of traditional religious ceremonies for these tribes. The Native American tribes harvest wildrice using traditional methods. Called “knocking the rice,” harvesters gently guide a canoe through the rice while using “knockers” to carefully knock or brush ripe rice into the canoe, taking great care not to damage the plants. This centuries-old method helps sustain wildrice stands.

2 Dec 2021

MacArthur Lock closing for seasonal repair, maintenance

SAULT STE. MARIE, Mich., - The Soo Locks’ MacArthur Lock will close to marine traffic 7:00 a.m. Dec. 15, 2021 through 12:01 a.m. April 30, 2022 to perform critical maintenance. The Poe Lock will remain open until 11:59 p.m. Jan. 15, 2022 or until commercial traffic ceases, whichever occurs first. The operating season is fixed by federal regulation and is driven in part by vessel operation ability in typical ice conditions. “The 800-foot-long MacArthur Lock, built in 1943, is 78 years old; the maintenance period is critical to keeping the lock in operation during the shipping season,” Maintenance Branch Chief LeighAnn Ryckeghem said.

1 Dec 2021

Measuring Great Lakes flows helps forecast water levels

DETROIT- Monitoring the amount of water moving through the Great Lakes system is important to help forecast Great Lakes water levels and support international monitoring efforts. U.S. Army Corps of Engineers officials physically measure discharge, or flow, in the connecting channels using acoustic technology. Monthly flow in the connecting channels is the largest contributing factor to the level of each Great Lake and is a critical piece in forecasting Great Lakes water levels. Detroit District Hydraulic Engineer, Matt McClerren demonstrates flow measurement on the Detroit River and how the Corps of Engineers estimates monthly flows the fifth ‘On the Level’ video, available on the district’s website at https://go.usa.gov/xFEWx.