Difference between revisions of "Portal:Desired Future Conditions -DFCs"
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− | The | + | The [[Media:DFCs 2012.pdf| '''Desired Future Conditions (DFCs)''']] are intended to be used within the Adaptive Management Program (AMP), including by the Adaptive Management Work Group (AMWG), to help guide the development of recommendations concerning management of Glen Canyon Dam operations and related activities, and dam impacts on Grand Canyon National Park (GCNP) and Glen Canyon National Recreation Area (GCNRA). The focus of this document is to identify DFCs that can be accomplished through dam operations. However, for the sake of completeness, this document also includes DFCs that might be achieved through non-operational measures. |
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− | ! style="width=33%; background:#cedff2;" | '''Justification'''<br>The Secretary is authorized to consider and implement both operational and non-operational measures to address downstream effects of Glen Canyon Dam if those measures meet the Grand Canyon Protection Act’s goal of protecting, mitigating adverse impacts to, and improving the resources downstream of the dam | + | ! style="width=33%; background:#cedff2;" | '''Justification'''<br>The Secretary is authorized to consider and implement both operational and non-operational measures to address downstream effects of Glen Canyon Dam if those measures meet the Grand Canyon Protection Act’s goal of protecting, mitigating adverse impacts to, and improving the resources downstream of the dam. |
! style="width=33%; background:#cedff2;" | '''Scope of the DFCs''' <br>The Colorado River ecosystem (CRE) which is defined as the Colorado River mainstream corridor and interacting resources in associated riparian and terrace zones, located primarily from the fore bay of Glen Canyon Dam to the western boundary of Grand Canyon National Park. It includes the area where the dam operations impact physical, biological, recreational, cultural, and other resources. The scope of GCDAMP activities may include limited investigations into some tributaries (e.g. the Little Colorado and Paria Rivers).<br> | ! style="width=33%; background:#cedff2;" | '''Scope of the DFCs''' <br>The Colorado River ecosystem (CRE) which is defined as the Colorado River mainstream corridor and interacting resources in associated riparian and terrace zones, located primarily from the fore bay of Glen Canyon Dam to the western boundary of Grand Canyon National Park. It includes the area where the dam operations impact physical, biological, recreational, cultural, and other resources. The scope of GCDAMP activities may include limited investigations into some tributaries (e.g. the Little Colorado and Paria Rivers).<br> | ||
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</span> | </span> | ||
− | These CRE DFCs address the natural resource values for which the GCNP and the GCNRA were established. The DFCs aim to comply with the GCPA and describe the individual resource objectives sought with the realization that they may not be achievable in the process of finding the most desirable mix of resources in the CRE and the natural habitats, and natural ecosystem processes. Native and non-native species are to be managed in accord with Federal regulations, policies, and guidelines. The CRE described herein includes most of the native natural resources found in the Colorado River. Those resources are managed, consistent with the | + | These CRE DFCs address the natural resource values for which the GCNP and the GCNRA were established. The DFCs aim to comply with the '''[[Grand Canyon Protection Act| Grand Canyon Protection Act of 1992 (GCPA)]]''' and describe the individual resource objectives sought with the realization that they may not be achievable in the process of finding the most desirable mix of resources in the CRE and the natural habitats, and natural ecosystem processes. Native and non-native species are to be managed in accord with Federal regulations, policies, and guidelines. The CRE described herein includes most of the native natural resources found in the Colorado River. Those resources are managed, consistent with the [http://www.crwua.org/colorado-river/uses/law-of-the-river '''"The Law of the River"'''] (described in part in Section 1802(b) of the GCPA, under the National Park Service (NPS) Organic Act, the Redwoods Amendment, NPS 2006 Management Policies, the Wilderness Act, the Antiquities Act, the Endangered Species Act, the GCPA, the Fish and Wildlife Coordination Act, and other Federal legislation. The health of the river ecosystem and the protection of the resource values of GCNP and GCNRA are important to the nation, many Native American Tribes, the economy of the Southwest, and the millions of visitors to the parks and the region. |
+ | |||
The CRE DFCs will provide a foundation for and help define the components of the Core Monitoring Program under development by the Grand Canyon Monitoring and Research Center (GCMRC). The Core Monitoring Program will be essential to ultimately quantifying, measuring, and reporting the status of the natural resources, allowing the Secretary and the AMP to track progress toward desired outcomes. DFCs will also provide foundation support in the development of other planning and management assignments associated with the GCDAMP. | The CRE DFCs will provide a foundation for and help define the components of the Core Monitoring Program under development by the Grand Canyon Monitoring and Research Center (GCMRC). The Core Monitoring Program will be essential to ultimately quantifying, measuring, and reporting the status of the natural resources, allowing the Secretary and the AMP to track progress toward desired outcomes. DFCs will also provide foundation support in the development of other planning and management assignments associated with the GCDAMP. | ||
− | |||
− | |||
|- | |- | ||
! <h2 style="margin:0; background:#cef2e0; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;">Colorado River Ecosystem (CRE) DFCs</h2> | ! <h2 style="margin:0; background:#cef2e0; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;">Colorado River Ecosystem (CRE) DFCs</h2> | ||
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''' | ''' | ||
− | == Sediment-related Resources == | + | == [http://gcdamp.com/index.php?title=GCDAMP_Sediment Sediment-related Resources] == |
''' | ''' | ||
− | High elevation open riparian sediment deposits along the Colorado River in sufficient volume, area, and distribution so as to provide habitat to sustain native biota and desired ecosystem processes<br> | + | High elevation open riparian sediment deposits along the Colorado River in sufficient volume, area, and distribution so as to provide habitat to sustain native biota and desired ecosystem processes.<br> |
• Nearshore habitats for native fish<br> | • Nearshore habitats for native fish<br> | ||
• Marsh and riparian habitat for fish (food chain maintenance)<br> | • Marsh and riparian habitat for fish (food chain maintenance)<br> | ||
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''' | ''' | ||
− | == Water Quality == | + | == [http://gcdamp.com/index.php?title=WATER_QUALITY Water Quality] == |
''' | ''' | ||
− | Water quality with regards to dissolved oxygen, nutrient concentrations and cycling, turbidity, temperature, etc., is sufficient to support natural ecosystem functions, visitor safety and visitor experience to the extent feasible and consistent with the life history requirements of focal aquatic species<br> | + | Water quality with regards to dissolved oxygen, nutrient concentrations and cycling, turbidity, temperature, etc., is sufficient to support natural ecosystem functions, visitor safety and visitor experience to the extent feasible and consistent with the life history requirements of focal aquatic species.<br> |
• Ecosystem-sustaining nutrient distribution, flux, and cycling.<br> | • Ecosystem-sustaining nutrient distribution, flux, and cycling.<br> | ||
• Hydro-physical conditions and characteristics of the CRE necessary to sustain aquatic biota.<br> | • Hydro-physical conditions and characteristics of the CRE necessary to sustain aquatic biota.<br> | ||
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== CRE Aquatic Domain == | == CRE Aquatic Domain == | ||
''' | ''' | ||
+ | '''[http://gcdamp.com/index.php?title=FOOD_BASE Aquatic Food Base:]'''<br> | ||
The aquatic food base will sustainably support viable populations of desired species at all trophic levels. Assure that an adequate, diverse, productive aquatic foodbase exists for fish and other aquatic and terrestrial species that depend on those food resources.<br> | The aquatic food base will sustainably support viable populations of desired species at all trophic levels. Assure that an adequate, diverse, productive aquatic foodbase exists for fish and other aquatic and terrestrial species that depend on those food resources.<br> | ||
− | '''Native Species'''<br> | + | '''[http://gcdamp.com/index.php?title=FISH Native Species:]'''<br> |
Native fish species and their habitats (including critical habitats) sustainably maintained throughout in each species’ natural ranges in the CRE.<br> | Native fish species and their habitats (including critical habitats) sustainably maintained throughout in each species’ natural ranges in the CRE.<br> | ||
• A healthy, self-sustaining populations of other remaining native fish with appropriate distribution (flannelmouth sucker, bluehead sucker, speckled dace, so that listing under the ESA is not needed.<br> | • A healthy, self-sustaining populations of other remaining native fish with appropriate distribution (flannelmouth sucker, bluehead sucker, speckled dace, so that listing under the ESA is not needed.<br> | ||
− | '''Humpback chub'''<br> | + | '''[http://gcdamp.com/index.php?title=Humpback_Chub_Page Humpback chub (HBC):]'''<br> |
− | • Achieve HBC recovery in accord with the Endangered Species Act (ESA) | + | • Achieve HBC recovery in accord with the Endangered Species Act (ESA), the HBC comprehensive management plan, and with the assistance of collaborators within and external to the AMP.<br> |
− | • A self-sustaining | + | • A self-sustaining HBC population in its natural range in the CRE.<br> |
• An ecologically appropriate habitat for the HBC in the mainstem.<br> | • An ecologically appropriate habitat for the HBC in the mainstem.<br> | ||
• Spawning habitat for HBC in the Lower Little Colorado.<br> | • Spawning habitat for HBC in the Lower Little Colorado.<br> | ||
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• Adequate survival of young-of-year or juvenile HBC that enter the mainstem to maintain reproductive potential of the population and achieve population sizes consistent with recovery goals.<br> | • Adequate survival of young-of-year or juvenile HBC that enter the mainstem to maintain reproductive potential of the population and achieve population sizes consistent with recovery goals.<br> | ||
− | '''Rainbow trout:'''<br> | + | '''[http://gcdamp.com/index.php?title=FISHERY Rainbow trout:]'''<br> |
A high quality trout fishery in GCNRA, as further described in the Recreation DFC that does not adversely affect the native aquatic community in GCNP.<br> | A high quality trout fishery in GCNRA, as further described in the Recreation DFC that does not adversely affect the native aquatic community in GCNP.<br> | ||
• Minimize emigration of non-native fish from the Lees Ferry reach in Glen Canyon National Recreation Area to downstream locations.<br> | • Minimize emigration of non-native fish from the Lees Ferry reach in Glen Canyon National Recreation Area to downstream locations.<br> | ||
• Minimize emigration of non-native warm water fish to the mainstem Colorado River.<br> | • Minimize emigration of non-native warm water fish to the mainstem Colorado River.<br> | ||
− | '''Extirpated Species:'''<br> | + | |
+ | '''[http://gcdamp.com/index.php?title=EXTIRPATED Extirpated Species:]'''<br> | ||
Re-establish fishes extirpated from Grand Canyon, where feasible and consistent with recovery goals for HBC and the recovery goals of those extirpated fishes. See the linkages that follow for further information.<br> | Re-establish fishes extirpated from Grand Canyon, where feasible and consistent with recovery goals for HBC and the recovery goals of those extirpated fishes. See the linkages that follow for further information.<br> | ||
− | '''Nonfish Biotic Communities:'''<br> | + | '''[http://gcdamp.com/index.php?title=ECOSYSTEM Nonfish Biotic Communities:]'''<br> |
Native non-fish aquatic biota and their habitats are sustainably maintained with ecologically appropriate distributions.<br> | Native non-fish aquatic biota and their habitats are sustainably maintained with ecologically appropriate distributions.<br> | ||
• Populations of native non-fish species (invertebrates and vertebrates, including Northern Leopard Frog).<br> | • Populations of native non-fish species (invertebrates and vertebrates, including Northern Leopard Frog).<br> | ||
− | - AMP | + | - AMP support, actions and funding are limited to incorporation of dam operations which are conducive to restoration of extirpated species.<br> |
• Minimize the abundance and distribution of non-native species in the CRE.<br> | • Minimize the abundance and distribution of non-native species in the CRE.<br> | ||
• Sustainable dam-influenced aquatic, wetland, and springs plant communities and associated biological processes, including those supporting threatened and endangered species and their habitats.<br> | • Sustainable dam-influenced aquatic, wetland, and springs plant communities and associated biological processes, including those supporting threatened and endangered species and their habitats.<br> | ||
''' | ''' | ||
− | == CRE Riparian Domain == | + | == [http://gcdamp.com/index.php?title=Riparian_Vegetation CRE Riparian Domain] == |
''' | ''' | ||
Native riparian systems, in various stages of maturity, are diverse, healthy, productive, self-sustaining, and ecologically appropriate.<br> | Native riparian systems, in various stages of maturity, are diverse, healthy, productive, self-sustaining, and ecologically appropriate.<br> | ||
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|- | |- | ||
− | ! <h2 style="margin:0; background:#cef2e0; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;">Hydropower DFCs</h2> | + | ! <h2 style="margin:0; background:#cef2e0; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;">[http://gcdamp.com/index.php?title=HYDROPOWER Hydropower DFCs]</h2> |
|- | |- | ||
|style="color:#000;"| | |style="color:#000;"| | ||
− | + | *Glen Canyon Dam capacity and energy generation is maintained and increased, so as to produce the greatest practicable amount of power and energy, consistent with the other DFCs.<br> | |
− | + | *Ensure continued delivery of Glen Canyon Dam hydropower to the existing customers who have entered into long-term firm power contracts with WAPA.<br> | |
− | + | *Ensure sufficient and efficient production of Glen Canyon Dam hydropower in order to provide the revenues to support the CRSP facilities and purposes.<br> | |
− | + | *Maintain the operational flexibility (including but not limited to load following capability, ramp rates, and emergency operations allowances) that enable Reclamation and WAPA to meet the system operating and other regulatory requirements of WECC, North American Electric Reliability Corporation and the Federal Energy Regulatory Commission, as well as emergency operating criteria for safety and human health situations.<br> | |
− | + | *Maximize the environmental benefits of hydropower generation at Glen Canyon Dam.<br> | |
− | + | *Minimize carbon emissions through hydropower generation at Glen Canyon Dam.<br> | |
''' | ''' | ||
== Why the Power DFC is Important == | == Why the Power DFC is Important == | ||
''' | ''' | ||
− | + | *Hydropower is an authorized purpose of Glen Canyon Dam.<br> | |
− | + | *Hydropower produced by Glen Canyon Dam is under long-term contract to not-for-profit entities and 57 tribal entities.<br> | |
− | + | *Power revenues are a significant funding source (est. $20 million/year) for the AMP, Upper Colorado River and San Juan River Endangered Fish Recovery Programs, and the Colorado River Salinity Control Program.<br> | |
− | + | *Hydropower is a renewable resource that is an important component in the Western Electricity Coordinating Council (WECC). Hydropower production is a national objective to help meet the Nation’s needs for reliable, affordable, and environmentally sustainable electricity.<br> | |
− | + | *Glen Canyon generation has the ability to “ramp up” to meet system reliability obligations that are important when regional power shortages or power/transmission system disruptions occur.<br> | |
+ | ''' | ||
+ | == DFC Goals and Objectives == | ||
+ | ''' | ||
+ | *Glen Canyon Dam capacity and energy generation is maintained and increased, so as to produce the greatest practicable amount of power and energy, consistent with the other DFCs. | ||
+ | *Ensure continued delivery of Glen Canyon Dam hydropower to the existing customers who have entered into long-term firm power contracts with WAPA. | ||
+ | *Ensure sufficient and efficient production of Glen Canyon Dam hydropower in order to provide the revenues to support the CRSP facilities and purposes. | ||
+ | *Maintain the operational flexibility (including but not limited to load following capability, ramp rates, and emergency operations allowances) that enable Reclamation and WAPA to meet the system operating and other regulatory requirements of WECC, North American Electric Reliability Corporation and the Federal Energy Regulatory Commission, as well as emergency operating criteria for safety and human health situations. | ||
+ | *Maximize the environmental benefits of hydropower generation at Glen Canyon Dam. | ||
+ | *Minimize carbon emissions through hydropower generation at Glen Canyon Dam. | ||
+ | |||
+ | ''' | ||
+ | == Additional Information == | ||
+ | ''' | ||
+ | '''Linkages''' <br> | ||
+ | *Operational changes, including experimentation and management actions, which include changes to volumes, release limitations (minimum and maximum), ramp rates, hourly, daily, monthly and seasonal variability, all potentially impact this resource. | ||
+ | *The above-identified parameters could have impacts to the CRE resources as well as recreational and cultural resources, depending on the operational design. | ||
+ | |||
+ | '''Metrics''' <br> | ||
+ | Valuation: Measurement characterization for an average year <br> | ||
+ | *Electric generating capacity (MW) | ||
+ | *Electric generating energy (MWH) | ||
+ | *Load following capability (MW/hr) | ||
+ | *Ramp rate capability (MW/hr) | ||
+ | *CO2, SO2 and NOX emissions (tons) | ||
+ | *Power plant water consumption (acre-feet) | ||
+ | *Costs ($ millions) | ||
|- | |- | ||
− | ! <h2 style="margin:0; background:#cef2e0; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;">Cultural Resources DFCs</h2> | + | ! <h2 style="margin:0; background:#cef2e0; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;">[http://gcdamp.com/index.php?title=CULTURAL Cultural Resources DFCs]</h2> |
|- | |- | ||
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''' | ''' | ||
− | == Traditional Cultural Properties (TCPs): == | + | == [http://gcdamp.com/index.php?title=Tribal_Resources Traditional Cultural Properties (TCPs):] == |
''' | ''' | ||
• Attributes are maintained such as National Register eligibility is not compromised. These attributes will be specific to the traditionally associated peoples and will need to be identified by the federal agencies in consultation with those groups. Attributes may include aspects of location or physical integrity, as well as be intangible elements that link the resource to ongoing traditional cultural practices.<br> | • Attributes are maintained such as National Register eligibility is not compromised. These attributes will be specific to the traditionally associated peoples and will need to be identified by the federal agencies in consultation with those groups. Attributes may include aspects of location or physical integrity, as well as be intangible elements that link the resource to ongoing traditional cultural practices.<br> | ||
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|- | |- | ||
− | ! <h2 style="margin:0; background:#cef2e0; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;">Recreation DFCs</h2> | + | ! <h2 style="margin:0; background:#cef2e0; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;">[http://gcdamp.com/index.php?title=RECREATION Recreation DFCs]</h2> |
− | + | ||
|- | |- | ||
|style="color:#000;"| | |style="color:#000;"| | ||
+ | |||
'''River Recreation in Grand Canyon National Park'''<br> | '''River Recreation in Grand Canyon National Park'''<br> | ||
• Stewardship worthy of the Grand Canyon so that it can be passed from generation to generation in as natural condition as possible.<br> | • Stewardship worthy of the Grand Canyon so that it can be passed from generation to generation in as natural condition as possible.<br> | ||
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|- | |- | ||
|style="color:#000;"| | |style="color:#000;"| | ||
− | *2012 Desired Future Conditions | + | |
+ | *[[Media:DFCs 2012.pdf| 2012 Desired Future Conditions]] | ||
+ | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/Attach_01c.pdf Desired Future Conditions memo from Anne Castle to the AWMG Dated August 19, 2015] | ||
|- | |- | ||
− | ! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3b0bf; text-align:left; color:#000; padding:0.2em 0.4em;">List of DFC | + | ! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3b0bf; text-align:left; color:#000; padding:0.2em 0.4em;">List of DFC Goals</h2> |
|- | |- | ||
|style="color:#000;"| | |style="color:#000;"| | ||
− | #Protect or improve the '''aquatic food base''' so that it supports viable populations of desired species at higher | + | |
− | #Maintain or attain viable populations of existing '''native fish''', and prevent adverse modification to their habitat (including critical habitat) | + | #Protect or improve the '''aquatic food base''' so that it supports viable populations of desired species at higher trophic levels. |
+ | #Maintain or attain viable populations of existing '''native fish''', and prevent adverse modification to their habitat (including critical habitat). | ||
#Restore viable populations of '''extirpated species'''. | #Restore viable populations of '''extirpated species'''. | ||
− | #Maintain a self- | + | #Maintain a self-sustaining recreational '''trout fishery''' in the Lees Ferry reach. |
#Maintain or attain viable populations of the '''Kanab ambersnail'''. | #Maintain or attain viable populations of the '''Kanab ambersnail'''. | ||
− | #Protect or improve the '''biotic riparian, wetland, spring and old high water zone plant communities''' and their associated biological processes within the Colorado River | + | #Protect or improve the '''biotic riparian, wetland, spring and old high water zone plant communities''' and their associated biological processes within the Colorado River ecosystem (including threatened and endangered species and their habitat). |
#Maintain or attain levels of '''sediment storage''' within the main channel and along shorelines to achieve ecosystem goals. | #Maintain or attain levels of '''sediment storage''' within the main channel and along shorelines to achieve ecosystem goals. | ||
#Maintain or improve the '''quality of recreational experiences''' for users of the Colorado River ecosystem, within the framework of ecosystem goals. | #Maintain or improve the '''quality of recreational experiences''' for users of the Colorado River ecosystem, within the framework of ecosystem goals. | ||
− | #Maintain '''power production capacity''' and '''energy generation''',and increase where feasible and advisable, | + | #Maintain '''power production capacity''' and '''energy generation''', and increase where feasible and advisable, within the framework of the Adaptive Management ecosystem goals. |
#Preserve, protect, manage and treat '''cultural resources''' for the inspiration and benefit of past, present, and future generations. | #Preserve, protect, manage and treat '''cultural resources''' for the inspiration and benefit of past, present, and future generations. | ||
− | *Tribal Resource Condition Objectives | + | *'''Tribal Resource Condition Objectives''' |
**Recommended that the agencies consult with the Tribes to insure these objectives are consistent with Tribal perspectives. | **Recommended that the agencies consult with the Tribes to insure these objectives are consistent with Tribal perspectives. | ||
+ | |||
+ | |- | ||
+ | ! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3b0bf; text-align:left; color:#000; padding:0.2em 0.4em;">Presentations</h2> | ||
+ | |- | ||
+ | |style="color:#000;"| | ||
+ | |||
+ | '''2011''' | ||
+ | *[https://www.usbr.gov/uc/rm/amp/amwg/mtgs/11aug24/Attach_04a.pdf AIF: Desired Future Conditions] | ||
+ | *[https://www.usbr.gov/uc/rm/amp/amwg/mtgs/11aug24/Attach_04b.pdf E-mail message from Anne Castle and DFC Comparison Table] | ||
+ | |||
+ | '''2010''' | ||
+ | *[https://www.usbr.gov/uc/rm/amp/amwg/mtgs/10feb03/Attach_11.pdf AIF: Desired Future Conditions and DFC Memo] | ||
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Latest revision as of 11:29, 5 November 2019
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The Desired Future Conditions (DFCs) are intended to be used within the Adaptive Management Program (AMP), including by the Adaptive Management Work Group (AMWG), to help guide the development of recommendations concerning management of Glen Canyon Dam operations and related activities, and dam impacts on Grand Canyon National Park (GCNP) and Glen Canyon National Recreation Area (GCNRA). The focus of this document is to identify DFCs that can be accomplished through dam operations. However, for the sake of completeness, this document also includes DFCs that might be achieved through non-operational measures. |
Justification The Secretary is authorized to consider and implement both operational and non-operational measures to address downstream effects of Glen Canyon Dam if those measures meet the Grand Canyon Protection Act’s goal of protecting, mitigating adverse impacts to, and improving the resources downstream of the dam. |
Scope of the DFCs The Colorado River ecosystem (CRE) which is defined as the Colorado River mainstream corridor and interacting resources in associated riparian and terrace zones, located primarily from the fore bay of Glen Canyon Dam to the western boundary of Grand Canyon National Park. It includes the area where the dam operations impact physical, biological, recreational, cultural, and other resources. The scope of GCDAMP activities may include limited investigations into some tributaries (e.g. the Little Colorado and Paria Rivers). |
DFC Organization These DFCs are divided into four categories, including the Colorado River Ecosystem, Power, Cultural Resources, and Recreation. There are many direct and indirect, short-term and long-term ecosystem responses to dam existence and operations. These DFCs are directly or indirectly linked on short and long-term bases through dam-related flows, sediment retention and distribution, hydropower production, fish and wildlife populations, recreation, and visitor experience. |
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