Page 93 - NRH FY20 Approved Capital Budget

Drainage Capital Projects
Department Project Title Project Number
Public Works Calloway Branch Channel Repair Project DR1503
Project Description
This is for the repair of failing channel along the Calloway Branch Channel that has resulted in the loss of material in several
backyards along Waggoner Ranch Road. Erosion caused by excessive rains following the years of recent drought caused bank
failure along the west bank of the Calloway Branch channel adjacent to the Graham Ranch subdivision. This project will restore the
west bank in the vicinity of the Graham Ranch properties and fortify the bank to prevent a future recurrence. Because the project is
located within FEMA's regulatory floodway, both a CLOMR and LOMR will be required.

Project Justification
With the extraordinary rainfall this spring the side slopes of a portion of this channel failed, sliding into the channel bottom and
causing a loss of material in several of the backyards along Waggoner Ranch Road. Staff hired a Geotechnical firm to learn exactly
what caused the failure and what could be done to correct the problem. Unfortunately, it is not as simple as replacing the dislodged
material back onto the channel bank. The clay material is not suited to exist at the required slope with elevated moisture content.
While the rains this year were unusually high, there is a high probability that the region will experience this level of rainfall again at
some point.
Erosion along the Calloway Branch channel is impacting at least one residential property and threatening a number of other
properties along Waggoner Ranch Road. Restoring and stabilizing the channel bank is necessary to prevent channel encroachment
into adjacent properties.

Note: Reserve funding is Drainage Utility Reserve.
FY 17-18 Revised Funding comes from project savings in DR1601.

Project Schedule Beginning Date Ending Date History Fiscal Year Amount
Professional Services Adopted Budget 2014-15 $68,500
Engineering/Design 09/2015 11/2016 Revision 2015-16 $30,000
Land/ROW Acquisition Adopted Budget 2016-17 $600,000
Construction 01/2016 10/2019 Revision 2016-17 $281,814
Other Revision 2017-18 $10,944
Total Schedule 09/2015 10/2019 Revision 2018-19 $320,000
Sources of Funds To Date 2019-20 Budget 2020-21 Estimate 2021-Completion Total Funding
General Obligation Bonds
Certificates of Obligation
Federal/State Grants
Reserves 1,446,258 0 0 0 $1,446,258
Sales Tax
Other
Total Funding $1,446,258 $0 $0 $0 $1,446,258
Project Costs To Date 2019-20 Budget 2020-21 Estimate 2021-Completion Total Cost
Professional Services
Engineering/Design 98,500 0 0 0 $98,500
Land/ROW Acquisition
Construction 1,347,758 0 0 0 $1,347,758
Other
Total Costs $1,446,258 $0 $0 $0 $1,446,258
Operating Impact
Minimal Operating impact is anticipated.

Fiscal Year 2019-20 2020-21 2021-22 2022-23 2023-24 Total Impact
Amount $0 $0 $0 $0 $0 $0
Total Operating Impact $0 $0 $0 $0 $0 $0

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