Document: NUREG-1555
Document ID: a61e4980-ac86-4217-a0a1-30f6cb00c240
Document Type: esrp
Title: HYDROLOGIC ALTERATIONS
Source: NUREG-1555
Source URL: https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1555/initial/
Revision Date: 2007-10
Chapter: 4
Section ID: 4.2.1
CFR Part: 
CFR Title: 

Content:
ve been identified and seek confirmation that the alterations that result in environmental impacts have been described in sufficient detail to allow for the subsequent analysis and assessment of these impacts. The reviewer should take the following steps: (1) Identify alterations in water quantity in the various construction affected hydrologic systems under the existing and known future water rights and allocations. (2) Describe the physical effects of identified alterations in the quantity of water available on other consumptive water users. (3) Describe the physical effects of altered hydrologic geometry, flow and circulation patterns, and mixing processes on nonconsumptive water users and to terrestrial and aquatic ecology. (a) Cooperate with the reviewers for ESRPs 4.1.1, 4.2.2, 4.3.1, and 4.3.2 in (1) determining the extent and magnitude of the resulting impacts and (2) evaluating means to mitigate or avoid these impacts. (b) When project construction or construction activity within a floodplain or wetland has been proposed, evaluate the extent of compliance with applicable floodplain or wetland protection standards and give particular attention to the consideration of alternatives to avoid adverse effects. (c) Assist the reviewer for ESRP 4.2.2 in evaluating the impacts of any construction or construction- related activity located in the floodplain or wetland. (d) Assist the appropriate ESRP 9.4 reviewers in the identification and analysis of alternatives that would avoid construction or construction activity in the floodplain or wetlands. (4) Describe the physical effects of altered erosional, depositional, and sediment characteristics on other water users, on nearby property, and to aquatic ecology. NUREG-1555 4.2.1-6 October 1999 The reviewer should identify the alterations by associating the previously identified activities with changes in (1) water quantity and availability, (2) hydrological geometries (especially within the floodplain or wetland), flow