This is probably the most popular design of experiments (DOE) book. It is unquestionably the leading DOE book in industry. So I am excepting it from the usual disdain I show for the  fth edition (5E) of any book, even though it follows the fourth edition (4E) by only four years. See Grice (2000) for a report on the 4E. Very likely this book bears little resemblance to the  rst edition way back in the 1970s. The author has taken particular care with this latest edition to reorganize the book to be consistent with modern DOE practice rather than classical DOE presentation. The primary change has been to move the chapters on regression modeling and response surface methods forward in the book. In the 4E these were the last two chapters in the book. In the 5E they follow the chapters on factorial and fractional factorial designs. Three chapters on “other designs” now close out the book. This certainly gives the book a better  ow for industry short courses. Perhaps these will simply be referenced as arcane methods in the sixth edition! Other production values in the book also continue to improve. There are many high-quality graphical displays. There is much use of printouts from Minitab and Design-Expert. A student version of Design-Export comes with the book. There is also an instructor’s CD-ROM with supplemental material to make the book suitable for more advanced courses. There is the now-essential Web site that has more information to help students and instructors. Perhaps if I were teaching DOE for master’s-level statisticians, the recent book by Dean and Voss (1999), reviewed by Amidan (2000), would be my choice. However, for most other audiences this is the complete DOE book. Industrial statisticians should get a copy of the new version and ensure its exposure to the relevant people in their organization.

Introduction to the Practice of Statistics

National Atlas of the United States.

: The Ordinary High Water Mark (OHWM) defines the lateral extent of non-wetland waters and is regulated as Waters of the United States under Sec. 404 of the Clean Water Act. Previous research has developed a reliable and repeatable methodology for identifying the OHWM on ephemeral and intermittent streams in the Arid West using the physical features of the channel (Lichvar and McColley 2008, Curtis and Lichvar 2010). This study expands upon the previous reports by providing an analysis of how gage data may be utilized in OHW determinations. We clarify the methodology for using gage data, review the potential errors encountered in developing a stage discharge relationship, compare the position of the gage-predicted OHWM to the field OHW signature, and determine the recurrence interval and flow duration of OHW events. The field OHW signature often is not associated with a 2-year flood event like many assume, but ranges from 1- to 15.5-year flood event. This large variation in recurrence intervals for the field OHWMs makes it impossible to define the frequency of the ordinary high flow from gage data because the OHW event is unique to each channel.

Ordinary High Flows and the Stage-Discharge Relationship in the Arid West Region

https://repository.arizona.edu/bitstream/10150/628256/1/Levick_JAridEnvirSubmittal2017FinalRev20180109.pdf

An ecohydrological stream type classification of intermittent and ephemeral streams in the southwestern United States

Hydraulic design and environmental permitting require the knowledge of ordinary high water marks (OHWMs) because they determine the federal jurisdictional limits over nontidal waters. The U...

Deterministic Approach to Identify Ordinary High Water Marks Using Hydrologic and Hydraulic Attributes

: The Ordinary High Water Mark (OHWM) is a method used to identify the lateral limits of non-wetland waters. Lichvar and McColley (2008) developed an OHWM delineation manual for ephemeral and intermittent streams in the Arid West. Their approach identified key hydrologic, geomorphic, and vegetation indicators useful in OHWM delineation. This technical note provides an updated datasheet to the manual. The datasheet has been simplified but still includes the overall field signatures and preliminary methods used to determine the OHWM. The datasheet now focuses on identifying the characteristics of each individual hydrogeomorphic floodplain unit and uses the differences between the floodplain units to identify the OHWM.

/pdf/updated-datasheet-for-the-identification-of-the-ordinary-1my0bibykv.pdf

Updated Datasheet for the Identification of the Ordinary High Water Mark (OHWM) in the Arid West Region of the Western United States

: The Arid West region is dominated by watersheds that have a high frequency of intermittent and ephemeral channels. These channels are influenced by watershed characteristics and the local hydrologic regime, which dictate the amount of sediment deposited and eroded in the channel. Over time, this sediment movement causes the geometry of the channel and the surrounding floodplain to evolve. For this study, 14 mountain, 18 foothill, and 17 basin ephemeral and intermittent channels within multiple watersheds were evaluated for specific characteristics, including geology, slope, watershed design, and floodplain geomorphology. We used multivariate analyses to explore patterns of similarities and differences among the channel and watershed characteristics. Using these results and characteristics, a simple, artificial channel classification to evaluate OHW indicators was devised to better understand watershed and intermittent and ephemeral channels across the landscape in the Arid West region. A total of 18 channel types were classified: 4 in the mountains, 8 in the foothills, and 6 in the basins. Our findings demonstrate that watershed and channel characteristics vary considerably across the landscape in the Arid West, suggesting that channel classification is potentially useful for evaluating the variability of occurrence of OHW indicators at a larger scale.

/pdf/channel-classification-across-arid-west-landscapes-in-2hnehochit.pdf

Channel classification across arid west landscapes in support of OHW delineation

Arid West fluvial systems are regulated as “Waters of the United States” (WoUS) under Section 404 of the Clean Water Act. The jurisdictional limits in Arid West channels are defined by using the “ordinary high water mark” (OHWM). Hydrology is the driving factor in the development and distribution of OHWM indicators, but incorporating landscape position may provide further insight into their distribution and reliability. The US Army Corps of Engineers OHW delineation manual indicates a large variability in the occurrence and position of OHWM indicators across channels but fails to evaluate the distribution of indicators at a larger scale. Evaluating OHWM indicators at a larger scale requires an understanding of what indicators are present, their sorting and distribution within a watershed, and their relationship to landscape features. For this study, the frequency and occurrence of OHWM indicators were evaluated to understand their distribution patterns across the Arid West region in 14 mountain, 18 foothill, and 17 basin ephemeral and intermittent channels within multiple watersheds. We found no significant OHWM indicator distribution patterns in any specific landscape position, but there were several OHWM indicators that occur more frequently than others across the entire landscape. The lack of a significant relationship between OHWM indicators and types of channels and their landscape positions supports previously reported results that showed that indicators are randomly distributed in all locations across a channel and may best be described as flow indicators rather than OHWM indicators. DISCLAIMER: The contents of this report are not to be used for advertising, publication, or promotional purposes. Citation of trade names does not constitute an official endorsement or approval of the use of such commercial products. All product names and trademarks cited are the property of their respective owners. The findings of this report are not to be construed as an official Department of the Army position unless so designated by other authorized documents. DESTROY THIS REPORT WHEN NO LONGER NEEDED. DO NOT RETURN IT TO THE ORIGINATOR. ERDC/CRREL TR-13-2 iii

/pdf/survey-of-ohwm-indicator-distribution-patterns-across-arid-3fk4zv8ol0.pdf

Survey of OHWM indicator distribution patterns across Arid West landscapes

: We evaluated the potential for regulating wet boulder fields as wetlands or other Waters of the US under Section 404 of the Clean Water Act. We monitored hydrology in two boulder fields in Maine during the 2011 growing season and documented the presence/absence of hydric soil, wetland hydrology, hydrophytic vegetation, and Ordinary High Water Mark (OHWM) indicators. The wetland hydrology criterion was statistically associated with the presence of primary hydrology indicator C4, hydric soils, FACU-dominated wetland, and a separation between the folist layer and the soil surface. The occurrence of hydrophytic vegetation and the combined use of primary and secondary hydrology indicators were not associated with the wetland hydrology criterion. Wet boulder fields should be delineated as wetland/nonwetland mosaics that contain problematic wetland types. We strongly suggest discontinuing the use of secondary hydrology indicators and primary indicator B8 (sparsely vegetated concave surface) in wet boulder fields. Alpha,alpha-dipyridyl paper strips are the most accurate method for determining if a primary hydrology indicator is present. We recommend applying this test several times over fourteen days. IRIS tubes and hydric soil indicators are reliable, but we suggest that alpha,alpha-dipyridyl paper strips be used to confirm a determination of nonhydric soil when a soil lacks a hydric soil indicator.

/pdf/testing-wetland-delineation-indicators-in-new-england-32wm1ajjj1.pdf

Katherine E Curtis

Papers

Ordinary High Flows and the Stage-Discharge Relationship in the Arid West Region

Updated Datasheet for the Identification of the Ordinary High Water Mark (OHWM) in the Arid West Region of the Western United States

Channel classification across arid west landscapes in support of OHW delineation

Survey of OHWM indicator distribution patterns across Arid West landscapes

Testing Wetland Delineation Indicators in New England Boulder Fields