Browsing by Subject/Keyword: year:
Rick Hootman (left), Pat Kelsey, and George Ware (right) in hard hats studying contour maps for future site of Crabapple Lake (3.4513)
Date: 1986 – 1987Creator: Irving, Gary
Type: Photographic image
Description:Rick Hootman (left), Pat Kelsey, and George Ware (right) in hard hats studying contour maps for future site of Crabapple Lake
Extent: 1 photograph
A Design for a Water Storage Lake with Controlled Water Release, The Morton Arboretum, Lisle, Illinois (3.5569)
Date: January 1987Creator: Tyznik, Anthony
Type: Plan
Description:"Flood elevation calculations using TR-55 method" served as basis for the development of Crabapple Lake. Lake dimensions and 100-year flood elevations shown by colored shading.
Extent: 1 sheet
A Design for a Water Storage Lake with Controlled Water Release, The Morton Arboretum, Lisle, Illinois (3.5570)
Date: January 1987Creator: Tyznik, Anthony
Type: Plan
Extent: 1 sheet
A Construction Drawing for Concrete Lake Overflow Structures for The Morton Arboretum, Lisle, Illinois (3.5571)
Date: August 1987Creator: Tyznik, Anthony
Type: Plan
Description:This structural design prepared in connection with the Crabapple Lake proposal.
Extent: 1 sheet
[Arboretum Maps Assembled for the Crabapple Lake Permit Application Submitted to the U.S. Army Corps of Engineers] (3.5573)
Date: September 1987Creator: Kelsey, Pat, Hootman, Rick
Type: Map
Description:The request contains: 1) Proposed lake site, location and vicinity, shown on the U.S.G.S. Wheaton quadrangle topographic map; 2) Proposed lake shown on the Arboretum collections grid map; and 3) the topographic and watershed site of the lake shown on the 1985 topographic map by Sidwell Company (SURV: A III (c) 2).
Extent: 3 sheets
A design for a water storage lake with controlled water release [ with location of existing and relocated water lines to the Landscape Conservation Nursery ] the Morton Arboretum, Lisle, Illinois (3.5633)
Date: January 1987Creator: Tyznik, Anthony
Type: Plan
Description:Collection has the basic design (See STRU: I (b) 1) on which the relocated water lines shown here are drawn in.
Extent: 1 sheet
1987/11/06: C. Lewis to G. Ware et al. (3.67074)
Date: November 6 1987Creator: Lewis, Charles A.
Type: Document
Description:Memo from Charles Lewis of the Morton Arboretum to George Ware concerning drainage problems in tree nurseries and proposed action plans.
Extent: 2 sheets
Crabapple Lake Plan Meeting: August 31, 1987 (3.67076)
Date: August 31 1987Type: Document
Description:Notes from an August 31, 1987 meeting regarding plans to correct erosion and drainage issues for Morton Arboretum's Crabapple Lake, Crowley Pond, and other affected areas.
Extent: 2 sheets