W912ES26BA001_Plans.pdf
PDF 21 MB Posted
- Attached to
- Corps Island Unloading
- Solicitation number
- W912ES26BA001
About this file
This is a set of project design documents for a Corps Island Dredge Site Unloading project located in Diamond Bluff, Wisconsin, on Pool 3 of the Mississippi River, prepared by the U.S. Army Corps of Engineers St. Paul District. The project involves dredge material placement and site unloading, with a solicitation number W912ES26BA001 issued in December 2025. The documents include detailed technical drawings showing the project location, site plan, typical sections, and hydrologic information for the Mississippi River.
Key technical specifications include a work limit of 8.2 acres, maximum removal depths between 650' and 660' elevation, and 1V:3H side slope requirements for berms. The site is accessible only by river and is highly susceptible to flooding and river stage fluctuations. Hydrological data from 1972-2024 at Lock and Dam 3 provides elevation and flow information, with the highest recorded pool elevation at 687.86 feet occurring on April 19, 1965. The project design emphasizes protecting existing trees and maintaining specific elevation and slope requirements for dredge material placement.
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POOL 3
DIAMOND BLUFF, WI
MISSISSIPPI RIVER
CORPS ISLAND DREDGE SITE UNLOADING
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SOLICITATION NO.:
CONTRACT NO.:
ISSUE DATE:
APPROVED BY:
APPROVAL RECOMMENDED BY:
CHIEF DIVISIONENGR & CONST
EC-D
CHIEF
CHIEF BRANCH
BRANCH
CHIEF BRANCH
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.
TECHNICAL LEAD
W912ES26BA001
DECEMBER 2025
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PROJECT LOCATION MAP
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VERTICAL AND HORIZONTAL CONTROL POINTS
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DAM 3
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EXISTING WING DAM (TYP) EAGLE NEST EXCLUSION ZONE (TYP)
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1"=1000'SCALE:
VERTICAL AND HORIZONTAL CONTROL POINTS
NAME NORTHING EASTING ELEVATION DESCRIPTION
OBERN 924,663.80 2,974,116.61 689.23 NGS PID AC4934
2000'0 1000'
BLUFF GPS
DIAMOND
939,540.37 2,983,968.3 1017.5 NGS PID DN7019
S GPS
TRENTON
919,063.13 3,000,935.73 718.78 NGS PID DL4232
CEPDNAV07 931,353.02 2,982,164.46 683.28
LANDING
COVER AT DIAMOND BLUFF BOAT
ALUMINUM CAP WITH ALUMINUM
F 126 - - 746.37 NGS PID PP0444
FLYNN 931,111.78 2,967,653.69 - NGS PID DK3530
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SHEET ID X-000
3 DIMENSIONAL
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2 DIMENSIONAL
CONTROL POINT##
1 DIMENSIONAL
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LOW CONTROL POOL (LCP) ELEVATION AT RIVER MILE 799 IS 673.7 FT NAVD88.8.
NAVD88.
LOW CONTROL POOL (LCP) ELEVATION AT RIVER MILE 797.06 IS 673.6 FT 7.
AERIAL IMAGERY DATED JUNE 2023.6.
ISLAND WERE DEVELOPED FROM SURVEY TAKEN IN NOVEMBER 2017.
TOPOGRAPHICAL CONTOURS AND SITE ELEVATIONS DEPICTED FOR CORPS 5.
SURVEY FT.
COORDINATES BASED ON NAD 83 (2011), MN SPCS, SOUTH ZONE - U.S. 4.
CONTRACTING OFFICER UPON CONTRACT AWARD.
VERTICAL CONTROL POINTS ARE AVAILABLE BY REQUEST TO THE
THE DIAGRAMS AND DETAILED DESCRIPTIONS OF HORIZONTAL AND 3.
DRAWINGS).
IMPACT CONTRACTOR WORK PROGRESS. SEE HYDROGRAPHS (REFERENCE
SUSCEPTIBLE TO FLOODING AND RIVER STAGE FLUCTUATIONS THAT MAY
THE UNLOADING SITE (CORPS ISLAND) IS WITHIN THE RIVER AND IS HIGHLY 2.
ACCESS TO THE UNLOADING SITE (CORPS ISLAND) IS BY RIVER ONLY.1.
GENERAL NOTES
EACH VIEW)
(CENTERED UNDER
VIEW SUBTITLE
GENERAL VIEW SYMBOLS
D1
SCALE:
DETAIL/SECTION
SUPPLEMENTAL INFORMATION
D1
SCALE:1" =XXX'
DETAIL/SECTION
SUPPLEMENTAL INFORMATION
TITLE
SECTION/DETAIL
NTS
N
0 1' 2'
TOP
FRONT SIDE
ELEVATION SECTION A-A
DrawingIdentifier
SheetName
DrawingIdentifier
SheetName
DrawingIdentifier
SheetName
SECTION CUT
DETAIL SYMBOL
### RIVER MILE
DESCRIPTIONDRAWING NO. PRODUCT I.D.
REFERENCE DRAWING INDEX
DAILY FLOW HYDROGRAPHS 2015-2024 JAN-DEC
FLOW DURATION CURVES 1972-2024 JAN-JUNE
FLOW DURATION CURVES 1972-2024 JULY-DEC
DESCRIPTION PRODUCT I.D.
DRAWING NO.
AS-BUILT
REF.
SHEET
CONSTRUCTION DRAWING INDEX
G-001
GENERAL DRAWINGS
COVER SHEET
PROJECT LOCATION AND VICINITY MAPSG-002
DRAWING INDEX, GENERAL NOTES, LEGEND, AND ABBREVIATIONSG-003
PLAN - CORPS ISLAND UNLOAD SITEC-101
CIVIL DRAWINGS
TYPICAL SECTIONS - CORPS ISLANDC-301
_CIDSU25_G-001XXX.DGN
_CIDSU25_G-002XXX.DGN
_CIDSU25_G-003XXX.DGN
_CIDSU25_C-101XXX.DGN
_CIDSU25_C-301XXX.DGN
0.999896930
COMBINED FACTOR (CF):
MN SPCS, SOUTH ZONE-U.S. SURVEY FT.
NAD 83 (2011)
COORDINATE SYSTEM (HORIZONTAL CONTROL):
GEOID:
NAVD 88
ELEVATION DATUM (VERTICAL CONTROL):
GEOSPATIAL DATUM INFORMATION
ZONE BUFFER
EAGLE NEST W/ 660' EXCLUSION
EXISTING WING DAM
FILL
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1V:3H, SEE NOTE 2.
MAXIMUM SIDE SLOPE
SEE NOTE 4.
WORK LIMITS
SEE NOTE 1
TOP OF BERM = EL 684'
FL
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MISSISSIPPI RIVER
1V:3H, SEE NOTE 2
MAXIMUM SIDE SLOPE
TREES, TYP
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MAXIMUM SIDE SLOPE
TREES, TYP
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MAXIMUM REMOVAL
DEPTH = EL 650'
MAXIMUM REMOVAL
DEPTH = EL 660'
EL. 684'
E 2983624.43
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1"=50'SCALE:
N
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GENERAL NOTES:
WITHIN THE WORK LIMIT IS 8.2 ACRES.
MATERIAL PILE (APPROXIMATELY EL 675). AREA
WORK LIMITS ARE TOE OF EXISTING DREDGE 4.
APPROXIMATE LOCATION AS SHOWN.
BE 1V:2H WITH A BOTTOM WIDTH OF 200'.
(EL 664). MAXIMUM SIDE SLOPES SHALL
AND STAGING SHALL BE 10' BELOW LCP
MAXIMUM DEPTH FOR DREDGE ACCESS 3.
PERIMETER.
TO PROTECT TREES ALONG ISLAND
OF EXISTING TREES, SLOPES MAY BE FLATTER
(APPROXIMATELY EL 675). AT THE LOCATION
EXISTING DREDGE MATERIAL PILE
1V:3H BERM SIDE SLOPES AT TOE OF
BERM SIDE SLOPES SHALL BE 1V:3H. BEGIN 2.
CONTRACTING OFFICER.
COORDINATE BERM LOCATION WITH
BE ADJUSTED TO PROTECT VEGETATION.
EDGE OF TREE LINE. BERM LOCATION MAY
EXISTING TREES, BEGIN BERM EDGE AT
BERM SHALL BE 10' (EL 684) ABOVE LCP. AT
BERM LOCATION IS APPROXIMATE. TOP OF 1.
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MAXIMUM REMOVAL DEPTH EL 650
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ON C-101
SEE NOTE 2
SLOPE VARIES,
EXISTING GRADE
ON C-101
SEE NOTE 1
TOP OF BERM
ON C-101
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TOP OF BERM,
EL 675'
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750 750
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DEPTH EL 650
MAXIMUM REMOVAL
1V:3H 1V:3H
ON C-101
SEE NOTE 1
TOP OF BERM
ON C-101
SEE NOTE 1
TOP OF BERM
EL 675'
EL 675'
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630 630
660 660
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720 720
DEPTH 660'
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GRADE
EXISTING
1V:3H1V:3H
ON C-101
SEE NOTE 1
TOP OF BERM
ON C-101
SEE NOTE 1
TOP OF BERM
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EL 675'
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FS
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
J M M J S N J M M J S N J M M J S N J M M J S N J M M J S N J M M J S N J M M J S N J M M J S N J M M J S N J M M J S N J
FL
O
W I
N C
FS
CORPS ISLAND DREDGED MATERIAL PLACEMENT
SITE UNLOAD
MISSISSIPPI RIVER - LOCK AND DAM 3
POOL ELEVATION HYDROGRAPHS
JANUARY 01 - DECEMBER 31
2015 - 2024
SHEET NUMBER: 1 OF 3
LOCK AND DAM 3
HYDROLOGIC INFORMATION
2020 2021 2022 2023 2024
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
EL
EV
AT
IO
N I
N F
EE
T
(N
AV
D
8)
2015 2016 2017 2018 2019
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
EL
EV
AT
IO
N I
N F
EE
T
(N
AV
D
8)
Notes:
1. The daily pool elevation hydrographs are based on data collected by the U.S. Army Corps of Engineers at Lock and Dam 3. There are 91 years of record 1935-2024. The highest recorded pool elevation occurred on April 19. 1965 (687.86 feet). MSL 1912 - 0.37 ft = NAVD 88 at Lock and Dam 3.
2. These hydrographs are based on the best information available. These 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.
CORPS ISLAND DREDGED MATERIAL
PLACEMENT SITE UNLOAD
MISSISSIPPI RIVER - LOCK AND DAM 3
POOL DURATION CURVES
JANUARY - JUNE
1972 - 2024
SHEET NUMBER: 2 OF 3
LOCK AND DAM 3
HYDROLOGIC INFORMATION
0 10 20 30 40 50 60 70 80 90 100
EL
EV
AT
IO
N I
N F
EE
T
(N
AV
D
8)
PERCENTAGE OF TIME EQUALLED OR EXCEEDED
MARCH
0 10 20 30 40 50 60 70 80 90 100
EL
EV
AT
IO
N I
N F
EE
T
(N
AV
D
8)
PERCENTAGE OF TIME EQUALLED OR EXCEEDED
JUNE
0 10 20 30 40 50 60 70 80 90 100
EL
EV
AT
IO
N I
N F
EE
T
(N
AV
D
8)
PERCENTAGE OF TIME EQUALLED OR EXCEEDED
JANUARY
0 10 20 30 40 50 60 70 80 90 100
EL
EV
AT
IO
N I
N F
EE
T
(N
AV
D
8)
PERCENTAGE OF TIME EQUALLED OR EXCEEDED
APRIL
0 10 20 30 40 50 60 70 80 90 100
EL
EV
AT
IO
N I
N F
EE
T
(N
AV
D
8)
PERCENTAGE OF TIME EQUALLED OR EXCEEDED
FEBRUARY
0 10 20 30 40 50 60 70 80 90 100
EL
EV
AT
IO
N I
N F
EE
T
(N
AV
D
8)
PERCENTAGE OF TIME EQUALLED OR EXCEEDED
MAY
Notes:
1. These monthly pool elevation duration curves were derived using data collected by the U.S. Army Corps of Engineers at Lock and Dam 3 for the period January 1972 through December 2024. MSL 1912 - 0.37 ft = NAVD 88 at Lock and Dam
3. Note pool elevation data exists prior to 1972 but was not used to compute duration curves due to a change in operation that occurred in 1971.
2. These duration curves are based on the best information available. These duration curves represent the period shown and do not necessarily represent all possible future conditions. Questions may be addressed to the office of the Corps of
CORPS ISLAND DREDGED MATERIAL
PLACEMENT SITE UNLOAD
MISSISSIPPI RIVER - LOCK AND DAM 3
POOL DURATION CURVES
1972 - 2024
SHEET NUMBER: 3 OF 3
LOCK AND DAM 3
HYDROLOGIC INFORMATION
0 10 20 30 40 50 60 70 80 90 100
EL
EV
AT
IO
N I
N F
EE
T
(N
AV
D
8)
PERCENTAGE OF TIME EQUALLED OR EXCEEDED
SEPTEMBER
0 10 20 30 40 50 60 70 80 90 100
EL
EV
AT
IO
N I
N F
EE
T
(N
AV
D
8)
PERCENTAGE OF TIME EQUALLED OR EXCEEDED
DECEMBER
0 10 20 30 40 50 60 70 80 90 100
EL
EV
AT
IO
N I
N F
EE
T
(N
AV
D
8)
PERCENTAGE OF TIME EQUALLED OR EXCEEDED
JULY
0 10 20 30 40 50 60 70 80 90 100
EL
EV
AT
IO
N I
N F
EE
T
(N
AV
D
8)
PERCENTAGE OF TIME EQUALLED OR EXCEEDED
OCTOBER
0 10 20 30 40 50 60 70 80 90 100
EL
EV
AT
IO
N I
N F
EE
T
(N
AV
D
8)
PERCENTAGE OF TIME EQUALLED OR EXCEEDED
AUGUST
0 10 20 30 40 50 60 70 80 90 100
EL
EV
AT
IO
N I
N F
EE
T
(N
AV
D
8)
PERCENTAGE OF TIME EQUALLED OR EXCEEDED
NOVEMBER
Notes:
1. These monthly pool elevation duration curves were derived using data collected by the U.S. Army Corps of Engineers at Lock and Dam 3 for the period January 1972 through December 2024. MSL 1912 - 0.37 ft = NAVD 88 at Lock and Dam
3. Note pool elevation data exists prior to 1972 but was not used to compute duration curves due to a change in operation that occurred in 1971.
2. These duration curves are based on the best information available. These duration curves represent the period shown and do not necessarily represent all possible future conditions. Questions may be addressed to the office of the Corps of
| 2025-12-17T14:36:20-0600 | |
| PERKINS.DUANE.A.1503498029 |
| 2025-12-17T13:11:53-0600 | |
| BEHLING.CHRISTOPHER.W.1230533535 |
| 2025-12-05T15:00:51-0600 | |
| Heather Henneman |
| 2025-12-05T14:13:23-0600 | |
| MORKEN.PAUL.1388326413 |
| 2025-12-18T13:43:09-0600 | |
| Kari Hauck |
File details come from the government source that posted it. Updated .