WSP02258

• File Number: 8449.750
• Description: Tri-Lakes ‎(Cherry Creek, Bear Creek, Chatfield)‎
• State: CO
• Basin: South Platte
• Date: 3/1/1996
• Author: USACOE
• Title: Water Supply Handbook "Storage Reallocation"
• Water Supply Pro - Doc Type: Publication

Chapter 4 - Reallocations

4-1.1.

Table 4-5
Hydropower Revenues Foregone

Caoacitv Charqe $30.24/kWhlvr
Loss in Marketable Caoacitv 1998-2015 5,231 kW
Loss in Marketable Capacity 2016-2072 10,462 kW
Total Present Value of Marketable Caoacitv $1,724,000
Annual Loss in Capacity $142,500
Enerqy Charqe 6.4 mils/kWh
Averaae Annual Enemy Loss 1998-2015 2,054,000 kWh
Averaqe Annual Enerav Loss 2016-2072 4,109,000 kWh
Total Present Value of Enerqy Loss $143,300
Averaqe Annual Loss in Enerav Revenues $11,800
Present Value of Revenues Foreaone $1,867,000
Total Annual Revenues Foreqone $154,400

c. Hvdropower Replacement Cost. (The replacement cost of power as
used for computing the cost of reallocated storage is an economic or National Economic
Development (NED) cost. In the case of hydropower, the NED cost of replacement power
is, by definition, identical to the power benefits foregone. In this example, this is the value
for Average Annual Power Benefits Foregone as is shown in Table 4-3 as $276,000. An
exception to this rule is where there are existing Federal contracts which obligate the
Government to deliver a specified amount of power and/or energy. In such cases,
replacement costs will be actual costs incurred to fulfill the Govemments obligations during
the duration of the contracts and revert to benefits foregone for the remaining period of
analysis.)

d. Flood Control Benefits Foreqone. (In reallocation of flood control
storage, lost flood control benefits in the entire system must be investigated as well as any
other impacts on reservoir operations; e.g., lost hydropower benefits and/or the impacts
on recreation opportunities. In reallocating flood control storage, it must be remembered
that flood control is normally the primary purpose of the project. Any significant reduction
in flood control protection which in tum would require mitigation through replacement
storage can be considered as being beyond the discretionary authority as defined by
Congress in the 1958 Water Supply Act.)