Hydrology Commons^™

The Morphology And Development Of Kalahroud Cave, Iran, Shirin Bahadorinia, Sayed Hassan Hejazi, Alireza Nadimi, Derek C. Ford, Karine Wainer

International Journal of Speleology

Kalahroud Cave is located in central Iran, ~50 km north of Isfahan. The landscape is a typical mountain desert morphology of cuestas dissected by ravines and gorges created during rare surface run-off events; crest lines are ~2800 m asl and lowlands at ~2100 m asl. Kalahroud Cave (4500 m of mapped passages, ~60 m deep) is entered through breakdown in the eastern wall of a gorge. The host rock is a Cretaceous limestone and mudstone formation 60 m in thickness, underlain by sandstones and conglomerates and overlain by weakly permeable calcareous marl strata, all dipping 15-20^o. Below the …

Provenance Analysis Of Granite Cobbles In The Tiskilwa Till Using U -Pb Geochronology, Paul Antone Meister

Theses and Dissertations

U-Pb isotopic ages were determined for zircons extracted from granitic and related rocks in the Tiskilwa till to determine their origin. Crystalline cobbles (n = 750) were collected at localities from each of the four of the sub-lobes of the terminal Wisconsin moraines. Two sites were chosen from the Decatur, Peoria, and Princeton sub-lobes with one sample taken from the Harvard sub-lobe. Each sample was then individually processed, the zircons handpicked (n = 301), and geochronology conducted using LA-MC-ICPMS at the University of Arizona Laserchron Center. A Kolmogorov-Smirnov (K-S) statistical analysis show that all samples have identical zircon age spectra …

U.S. Drought Monitor, October 4, 2016, Brian Fuchs

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for October 4, 2016 (10/4/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.

Droughtscape, Fall 2016, National Drought Mitigation Center

DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)

Contents

NDMC welcome two to team

Third quarter drought summary: Drought still spreading

Third quarter drought impacts: It was a hot, dry summer

Drought management framework for Africa approved

MENA region update

US Virgin Islands one step closer to its own drought monitor

Montana looks to improve watershed resilience

Tournament tackles hazards

Web tool will help officials make drought-related decisions

Dry Horizons launches

U.S. Drought Monitor, September 27, 2016, Chris Fenimore

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for September 27, 2016 (9/27/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.

Birth And Evolution Of The Rio Grande Fluvial System In The Last 8 Ma:Progressive Downward Integration And Interplay Between Tectonics, Volcanism, Climate, And River Evolution, Marisa N. Repasch

Earth and Planetary Sciences ETDs

The Rio Grande-Rio Chama (RG-RC) fluvial system has evolved dramatically over the last 8 Ma, undergoing channel migrations, drainage capture and integration events, volcanic damming, and carving and refilling of paleocanyons. Volcanism concurrent with the development of the river system provides a unique opportunity to apply multiple geochronometers to the study of its incision and drainage evolution. This paper reports 19 new ⁴⁰Ar/³⁹Ar basalt ages and 19 detrital mineral samples (zircon and sanidine) collected from RG-RC alluvium overlain by dated basalt flows in the context of a compilation of published ⁴⁰Ar/³⁹Ar basalt ages. The …

U.S. Drought Monitor, September 20, 2016, Anthony Artusa

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for September 20, 2016 (9/20/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.

Blake Tullis Receives Prestigous Asdso Award, Utah Water Research Laboratory

News

Dr. Blake Tullis was recently selected to receive the 2016 ASDSO Terry L. Hampton Medal. This award was established in 2007 to recognize individuals who have made outstanding contributions to dam safety. Recipients must work the field of dam safety, hydrology, and hydraulics; conduct hydrologic or hydraulic research related to dams of significant impact to dam engineering; participate in organizations focused on dams, dam safety, dam engineering, etc.; and have made significant contributions to the practice of hydrologic and/or hydraulic engineering for dams.

U.S. Drought Monitor, September 13, 2016, Eric Luebehusen

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for September 13, 2016 (9/13/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.

Drought In A Human-Modified World: Reframing Drought Definitions, Understanding, And Analysis Approaches, Anne F. Van Loon, Kerstin Stahl, Giuliano Di Baldassarre, Julian Clark4, Sally Rangecroft, Niko Wanders, Tom Gleeson, Albert I. J. M. Van Dijk, Lena M. Tallaksen, Jamie Hannaford, Remko Uijlenhoet, Adriaan J. Teuling, David M. Hannah, Justin Sheffield, Mark D. Svoboda, Boud Verbeiren, Thorsten Wagener, Henny A. J. Van Lanen

National Drought Mitigation Center: Faculty Publications

In the current human-modified world, or Anthropocene, the state of water stores and fluxes has become dependent on human as well as natural processes.Water deficits (or droughts) are the result of a complex interaction between meteorological anomalies, land surface processes, and human inflows, outflows, and storage changes. Our current inability to adequately analyse and manage drought in many places points to gaps in our understanding and to inadequate data and tools. The Anthropocene requires a new framework for drought definitions and research. Drought definitions need to be revisited to explicitly include human processes driving and modifying soil moisture drought and …

Aggieair Helps Find Fish When Yellow Creek Runs Dry, Utah Water Research Laboratory

News

A recent KSL News story highlighted a research project ongoing at Yellow Creek along the Utah/Wyoming border that includes state agencies from both states, along with federal agencies and the Nature Conservancy. AggieAir's autonomous unmanned aerial vehicles (UAVs), developed at the Utah Water Research Laboratory, are useful tools for researchers seeking to protect native fish species during times when the creek runs dry, such as during times of drought or late summer when irrigation use draws down the available water. Using remote sensing in the visual and infrared spectrums, Aggie Air helps researchers to locate pockets of water where the …

Lake Isabella Dam Usace Team Returns To The Uwrl, Utah Water Research Laboratory

News

On Wednesday, representatives from the U.S. Army Corps of Engineers design and construction team for the Lake Isabella Dam Restoration Project visited the UWRL for another look at the large 1:45 scale model of the planned labyrinth weir spillway modifications the Corps commissioned UWRL researchers to construct in the UWRL hydraulics laboratory so they could test their designs.

Umphlett Qci Sept 2016, Natalie Umphlett

High Plains Regional Climate Center: Staff Publications

Highlights for the Basin

Temperature and Precipitation Anomalies

Streamflow Conditions

Challenging Season for Bird Breeding

Mixed Impacts to Agriculture this Summer

Unprecedented Fish Kill on Yellowstone River

3-Month Precipitation and Temperature Outlooks

Soil Moisture Conditions

Modeling Of Historic Columbia River Flood Impacts Based On Delft 3d Simulations, Lumas Terence Helaire

Dissertations and Theses

Natural and anthropogenic processes over the past 150 years have altered the bathymetry of the Lower Columbia River (LCR) and have changed the long wave propagation of tides and floods. Possible causes for the increase in tidal amplitudes (+7% in tidal range in Astoria) are decreases in river discharge, lengthening of the river channel due to the construction of jetties at the mouth, dredging and deepening of the shipping channel, and reduction of the tidal prism due to the filling and diking of tidal wetlands. In this study, changes in the characteristics of long waves are elucidated by developing two …

Tidal-Fluvial And Estuarine Processes In The Lower Columbia River: Ii. Water Level Models, Floodplain Wetland Inundation, And System Zones, David A. Jay, Amy B. Borde, Heida Diefenderfer

Civil and Environmental Engineering Faculty Publications and Presentations

Spatially varying water-level regimes are a factor controlling estuarine and tidal-fluvial wetland vegetation patterns. As described in Part I, water levels in the Lower Columbia River and estuary (LCRE) are influenced by tides, river flow, hydropower operations, and coastal processes. In Part II, regression models based on tidal theory are used to quantify the role of these processes in determining water levels in the mainstem river and floodplain wetlands, and to provide 21-year inundation hindcasts. Analyses are conducted at 19 LCRE mainstem channel stations and 23 tidally exposed floodplain wetland stations. Sum exceedance values (SEVs) are used to compare wetland …

U.S. Drought Monitor, August 30, 2016, Chris Fenimore

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for August 30, 2016 (8/30/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.

Quantifying Peat Carbon Accumulation In Alaska Using A Process-Based Biogeochemistry Model, Sirui Wang, Qianlai Zhuang, Zicheng Yu, Scott Bridgham, Jason K. Keller

Education Faculty Articles and Research

This study uses an integrated modeling framework that couples the dynamics of hydrology, soil thermal regime, and ecosystem carbon and nitrogen to quantify the long-term peat carbon accumulation in Alaska during the Holocene. Modeled hydrology, soil thermal regime, carbon pools and fluxes, and methane emissions are evaluated using observation data at several peatland sites in Minnesota, Alaska, and Canada. The model is then applied for a 10,000 year (15 ka to 5 ka; 1 ka = 1000 cal years before present) simulation at four peatland sites. We find that model simulations match the observed carbon accumulation rates at fen sites …

U.S. Drought Monitor, August 23, 2016, Brad Rippey

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for August 23, 2016 (8/23/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.

U.S. Drought Monitor, August 16, 2016, David Miskus

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for August 16, 2016 (8/16/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.

U.S. Drought Monitor, August 9, 2016, Richard Tinker

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for August 9, 2016 (8/9/16) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Corn, Soybeans, Hay, Cattle, Winter wheat.