W912ES20B0014_Plans.pdf

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W912ES20B0014

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MCMILLAN ISLAND DREDGE SITE UNLOADING 2020

ADVERTISEMENT

APPROVED BY:

APPROVAL RECOMMENDED BY:

CHIEF DIVISIONENGR & CONST

EC-D

CHIEF

CHIEF BRANCH

BRANCH

CHIEF BRANCH

PROJECT MANAGER

EC-H

EC-G

MENDATION OF ALL DRAWINGS IN THIS SET.

SIGNATURES INDICATE OFFICIAL RECOM-

MENT AS REQUIRED BY ER 1110-1-8152.

WITHIN THE SCOPE OF THEIR EMPLOY-

APPEAR ON THESE PROJECT DOCUMENTS

TRATION DESIGNATIONS OF INDIVIDUALS

THE INITIALS OR SIGNATURES AND REGIS-

PAUL DISTRICT CORPS OF ENGINEERS.

THIS PROJECT WAS DESIGNED BY THE ST.

MARCH 2020

2010 2011 2012 2013 2014 2015

J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J

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2015 2016 2017 2018 2019 2020

J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J

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LOCK AND DAM 10

MCMILLAN ISLAND UNLOAD

MISSISSIPPI RIVER

POOL ELEVATION HYDROGRAPHS

JANUARY 01 DECEMBER 31

2010 2019

POOL STAGE HYDROS

LOCK AND DAM 10

HYDROLOGIC INFORMATION

Notes:

1. The daily pool elevation hydrograph is based on ten years of pool elevation observations recorded by the USACE pool gage at Lock and Dam 10 at Guttenburg, IA. Daily observations shown above are taken at approximately 8AM Central Standard Time (CST). MSL 1912 0.61 ft = NAVD 88 at Lock and Dam 10. McMillan Island is roughly 4 river miles above L/D 10.

2. These elevation hydrographs are based on the best information available. These elevation hydrographs represent the period shown, and do not necessarily represent all possible future conditions. Questions may be addressed to the office of the Corps of Engineers St. Paul, Minnesota.

LOCK AND DAM 10

MCMILLAN ISLAND UNLOAD

MISSISSIPPI RIVER

POOL ELEVATION DURATION CURVES

JANUARY JUNE

1975 2019

POOL STAGE DUR_1

LOCK AND DAM 10

HYDROLOGIC INFORMATION

Notes:

1. These monthly duration curves were derived using the U.S. Army Corps of Engineers Lock and Dam 10 daily pool data for the period 1975 through 2019. MSL 1912 0.61 ft = NAVD 88 at Lock and Dam 10. McMillan Island is roughly 4 river miles above L/D 10

2. These elevation duration curves are based on the best information available. These elevation hydrographs represent the period 1973 2016, and do not necessarily represent all possible future conditions. Questions may be addressed to the office of the Corps of Engineers St. Paul, Minnesota.

0 10 20 30 40 50 60 70 80 90 100

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PERCENTAGE OF TIME EQUALLED OR EXCEEDED

MARCH

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PERCENTAGE OF TIME EQUALLED OR EXCEEDED

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PERCENTAGE OF TIME EQUALLED OR EXCEEDED

JANUARY

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PERCENTAGE OF TIME EQUALLED OR EXCEEDED

APRIL

0 10 20 30 40 50 60 70 80 90 100

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PERCENTAGE OF TIME EQUALLED OR EXCEEDED

FEBRUARY

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PERCENTAGE OF TIME EQUALLED OR EXCEEDED

MAY

LOCK AND DAM 10

MCMILLAN ISLAND UNLOAD

MISSISSIPPI RIVER

POOL ELEVATION DURATION CURVES

JULY DECEMBER

1975 2019

POOL STAGE DUR_2

LOCK AND DAM 10

HYDROLOGIC INFORMATION

0 10 20 30 40 50 60 70 80 90 100

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PERCENTAGE OF TIME EQUALLED OR EXCEEDED

EPTEMBER

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PERCENTAGE OF TIME EQUALLED OR EXCEEDED

DECEMBER

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OCTOBER

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PERCENTAGE OF TIME EQUALLED OR EXCEEDED

NOVEMBER

Notes:

1. These monthly duration curves were derived using the U.S. Army Corps of Engineers Lock and Dam 10 daily pool data for the period 1975 through 2019. MSL 1912 0.61 ft = NAVD 88 at Lock and Dam 10. McMillan Island is roughly 4 river miles above L/D 10

2. These elevation duration curves are based on the best information available. These elevation hydrographs represent the period 1973 2016, and do not necessarily represent all possible future conditions. Questions may be addressed to the office of the Corps of Engineers St. Paul, Minnesota.