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Articles 1 - 28 of 28

Full-Text Articles in Physical Sciences and Mathematics

Lower Bound On Preserved Flood Duration In Fluvial Bedform Stratigraphy (Experimental Dataset), Robert C. Mahon, Vamsi Ganti, Madeline M. Kelley, Debsmita Das, Victoria Sanchez, Giancarlo Portocarrero, Mayson Fredricks Mar 2024

Lower Bound On Preserved Flood Duration In Fluvial Bedform Stratigraphy (Experimental Dataset), Robert C. Mahon, Vamsi Ganti, Madeline M. Kelley, Debsmita Das, Victoria Sanchez, Giancarlo Portocarrero, Mayson Fredricks

Lower Bound on Preserved Flood Duration in Fluvial Bedform Stratigraphy (experimental dataset)

This data is collected to assess the role of hydrograph timescale relative to dune migration on the preservation of cross sets in the stratigraphic record. The data presented here are of dune evolution under steady-state conditions, as well as three hydrographs of the same magnitude but varying timescales.

Methodology:

We collected data from four experiments tracking bedform evolution in a 22-m-long, 0.56-m-wide, 0.9-m-deep flume at the University of New Orleans Dynamics of Sedimentation laboratory. We conducted an equilibrium experiment (discharge value 0.027 m3/s) and three flood experiments, which were characterized by a symmetrical flood wave. In all flood experiments, the …


Data For "Density Constrains Environmental Impacts Of Fluid Abstraction In Continental Lithium Brines", Daniel B. Corkran, David F. Boutt, Lee Ann Munk, Brendan J. Moran, Sarah Mcknight, Jordan Jenckes, Alexander Kirshen Jan 2024

Data For "Density Constrains Environmental Impacts Of Fluid Abstraction In Continental Lithium Brines", Daniel B. Corkran, David F. Boutt, Lee Ann Munk, Brendan J. Moran, Sarah Mcknight, Jordan Jenckes, Alexander Kirshen

Data and Datasets

This dataset contains all data used in the study "Density constrains environmental impacts of fluid abstraction in continental lithium brines." Data include all SEAWAT groundwater-flow model input and output files, which contain all data associated with the parametric modeling study. It also contains NDVI and total annual precipitation datasets used in the study's remote sensing analysis.


Spot1356 Black Rock, Robert C. Mahon, Elizabeth J. Trower, Benjamin P. Smith, Tyler A. Lincoln, Juliana Olsen-Valdez, John S. Magyar, Cedric J. Hagen May 2023

Spot1356 Black Rock, Robert C. Mahon, Elizabeth J. Trower, Benjamin P. Smith, Tyler A. Lincoln, Juliana Olsen-Valdez, John S. Magyar, Cedric J. Hagen

2D Wave Spectral Data, South Arm, Great Salt Lake, Utah

Data in this folder are produced by a SoFarOcean Spotter wave buoy deployed along the south arm of the Great Salt Lake, near Antelope Island State Park from the period of July 13, 2021 through June 28, 2022, in relatively shallow water, approximately 1.6m.


Spot1328 Meira Spit, Robert C. Mahon, Elizabeth J. Trower, Benjamin P. Smith, Tyler A. Lincoln, Juliana Olsen-Valdez, John S. Magyar, Cedric J. Hagen May 2023

Spot1328 Meira Spit, Robert C. Mahon, Elizabeth J. Trower, Benjamin P. Smith, Tyler A. Lincoln, Juliana Olsen-Valdez, John S. Magyar, Cedric J. Hagen

2D Wave Spectral Data, South Arm, Great Salt Lake, Utah

Data in this folder are produced by a SoFarOcean Spotter wave buoy deployed along the south arm of the Great Salt Lake, near Antelope Island State Park from the period of July 13, 2021 through June 28, 2022, in relatively shallow water, approximately 1.6m.

IMPORTANT NOTE: Water depths for #1328 (Miera Spit) started at ~1.7 m, but dropped rapidly to 0.9 m on July 15, 2021 and dropped further to ~0.4 m on August 17, 2021. The timing of these rapid water depth changes matches the timing of buoy location changes when the anchor was dragged inshore by waves. When …


Spot1356 Black Rock Derived Data, Robert C. Mahon, Elizabeth J. Trower, Benjamin P. Smith, Tyler A. Lincoln, Juliana Olsen-Valdez, John S. Magyar, Cedric J. Hagen May 2023

Spot1356 Black Rock Derived Data, Robert C. Mahon, Elizabeth J. Trower, Benjamin P. Smith, Tyler A. Lincoln, Juliana Olsen-Valdez, John S. Magyar, Cedric J. Hagen

2D Wave Spectral Data, South Arm, Great Salt Lake, Utah

Data in this folder are produced by a SoFarOcean Spotter wave buoy deployed along the south arm of the Great Salt Lake, near Antelope Island State Park from the period of July 13, 2021 through June 28, 2022, in relatively shallow water, approximately 1.6m.


Spot1328 Meira Spit Derived Data, Robert C. Mahon, Elizabeth J. Trower, Benjamin P. Smith, Tyler A. Lincoln, Juliana Olsen-Valdez, John S. Magyar, Cedric J. Hagen May 2023

Spot1328 Meira Spit Derived Data, Robert C. Mahon, Elizabeth J. Trower, Benjamin P. Smith, Tyler A. Lincoln, Juliana Olsen-Valdez, John S. Magyar, Cedric J. Hagen

2D Wave Spectral Data, South Arm, Great Salt Lake, Utah

Data in this folder are produced by a SoFarOcean Spotter wave buoy deployed along the south arm of the Great Salt Lake, near Antelope Island State Park from the period of July 13, 2021 through June 28, 2022, in relatively shallow water, approximately 1.6m.

IMPORTANT NOTE: Water depths for #1328 (Miera Spit) started at ~1.7 m, but dropped rapidly to 0.9 m on July 15, 2021 and dropped further to ~0.4 m on August 17, 2021. The timing of these rapid water depth changes matches the timing of buoy location changes when the anchor was dragged inshore by waves. When …


Rainbow Beach Sediment Grain Size Analysis, Northampton, Massachusetts, Brian Yellen Jan 2023

Rainbow Beach Sediment Grain Size Analysis, Northampton, Massachusetts, Brian Yellen

Data and Datasets

This dataset was prepared by Brian Yellen, a research assistant professor in the Department of Earth, Geographic, and Climate Sciences at the University of Massachusetts Amherst. Dr. Yellen worked in conjunction with Melissa Grader of the USFWS and colleagues to conduct the associated field sampling.

This report provides information related to the substrate grain size at surveyed locations on Rainbow Beach on the Connecticut River in Northampton, MA (42.322125, -72.584928). This location is a known breeding site of the endangered puritan tiger beetle (PTB), Ellipsoptera puritana.


Data For "Hydrological Signatures In Wetlands In The Li-Rich Salar Basins Of The Andes, South America", Sarah Mcknight, Jordan Jenckes, David Boutt, Brendan Moran, Lee Ann Munk, Alexander Kirshen Jan 2023

Data For "Hydrological Signatures In Wetlands In The Li-Rich Salar Basins Of The Andes, South America", Sarah Mcknight, Jordan Jenckes, David Boutt, Brendan Moran, Lee Ann Munk, Alexander Kirshen

Data and Datasets

Data relevant to regional study of surface water inundation dynamics, vegetative areas, temperature, and precipitation in the Andes of South America.


Soil Moisture And Geomorphologic Data For Use In Dynamic And Forecastable Landslide Hazard Analyses In Eastern Kentucky, Daniel M. Francis, L. Sebastian Bryson Jan 2023

Soil Moisture And Geomorphologic Data For Use In Dynamic And Forecastable Landslide Hazard Analyses In Eastern Kentucky, Daniel M. Francis, L. Sebastian Bryson

Civil Engineering Research Data

These data are the geomorphologic and land information system-based soil moisture estimates from assimilation of NASA SMAP satellite-based observations and NOAH 3.6 Land Surface Model estimates over known landslides in Eastern Kentucky. Additionally Long Short-Term Memory Recurrent Neural Network and logistic regression machine learning codes, as well as an Application programming interface code are included. Finally, in-situ data from Eastern Kentucky is included.


Spatiotemporal Retrievals Of Soil Moisture And Geomorphologic Data For Landslide Sites In Eastern Kentucky, Lindsey Sebastian Bryson, Daniel M. Francis Jan 2023

Spatiotemporal Retrievals Of Soil Moisture And Geomorphologic Data For Landslide Sites In Eastern Kentucky, Lindsey Sebastian Bryson, Daniel M. Francis

Civil Engineering Research Data

These data are the soil texture, land information system-based soil moisture estimates from assimilation of NASA SMAP satellite-based observations and NOAH 3.6 Land Surface Model estimates, artificial neural network machine learning code, and in-situ soil moisture measurements.


Adjustment Of Precipitation Measurements Using Total Rain Weighing Sensor (Trws) Gauges In The Cryospheric Hydrometeorology Observation (Choice) System Of The Qilian Mountains, Northwest China, Zhao Yanni, Chen Rensheng, Han Chuntan, Wang Lei Apr 2022

Adjustment Of Precipitation Measurements Using Total Rain Weighing Sensor (Trws) Gauges In The Cryospheric Hydrometeorology Observation (Choice) System Of The Qilian Mountains, Northwest China, Zhao Yanni, Chen Rensheng, Han Chuntan, Wang Lei

Journal of Arid Land

Precipitation is one of the most important indicators of climate data, but there are many errors in precipitation measurements due to the influence of climatic conditions, especially those of solid precipitation in alpine mountains and at high latitude areas. The measured amount of precipitation in those areas is frequently less than the actual amount of precipitation. To understand the impact of climatic conditions on precipitation measurements in the mountainous areas of Northwest China and the applicability of different gauges in alpine mountains, we established a cryospheric hydrometeorology observation (CHOICE) system in 2008 in the Qilian Mountains, which consists of six …


Identifying Water Vapor Sources Of Precipitation In Forest And Grassland In The North Slope Of The Tianshan Mountains, Central Asia, Chen Haiyan, Chen Yaning, Li Dalong, Li Weihong, Yang Yuhui Apr 2022

Identifying Water Vapor Sources Of Precipitation In Forest And Grassland In The North Slope Of The Tianshan Mountains, Central Asia, Chen Haiyan, Chen Yaning, Li Dalong, Li Weihong, Yang Yuhui

Journal of Arid Land

Identifying water vapor sources in the natural vegetation of the Tianshan Mountains is of significant importance for obtaining greater knowledge about the water cycle, forecasting water resource changes, and dealing with the adverse effects of climate change. In this study, we identified water vapor sources of precipitation and evaluated their effects on precipitation stable isotopes in the north slope of the Tianshan Mountains, China. By utilizing the temporal and spatial distributions of precipitation stable isotopes in the forest and grassland regions, Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model, and isotope mass balance model, we obtained the following results. (1) The …


Effects Of Climate Change And Land Use/Cover Change On The Volume Of The Qinghai Lake In China, Wang Hongwei, Qi Yuan, Lian Xihong, Zhang Jinlong, Yang Rui, Zhang Meiting Apr 2022

Effects Of Climate Change And Land Use/Cover Change On The Volume Of The Qinghai Lake In China, Wang Hongwei, Qi Yuan, Lian Xihong, Zhang Jinlong, Yang Rui, Zhang Meiting

Journal of Arid Land

Qinghai Lake is the largest saline lake in China. The change in the lake volume is an indicator of the variation in water resources and their response to climate change on the Qinghai-Tibetan Plateau (QTP) in China. The present study quantitatively evaluated the effects of climate change and land use/cover change (LUCC) on the lake volume of the Qinghai Lake in China from 1958 to 2018, which is crucial for water resources management in the Qinghai Lake Basin. To explore the effects of climate change and LUCC on the Qinghai Lake volume, we analyzed the lake level observation data and …


Assessment Of Water Resources In Yarmouk River Basin Using Geospatial Technique During The Period 1980–2020, Noor M Al-Kharabsheh Mar 2022

Assessment Of Water Resources In Yarmouk River Basin Using Geospatial Technique During The Period 1980–2020, Noor M Al-Kharabsheh

Journal of Arid Land

It is common knowledge that Yarmouk River Basin (YRB) is shared between Jordan and Syria. Management of YRB trans-boundary water resources is attracting increasing interest because it is a strategic water resource for the riparian countries. Actually, lack of sharing information regarding hydrological flows and basin's water management between partners' countries makes it difficult to distinguish between natural and man-made factors affecting the water body. Therefore, this study seeks to address and assess the main on-site changes that exert on YRB. Geospatial technique and arithmetic equations were combined to carry out an assessment of the changes on water resources in …


Data For "Distinct Hydrologic Pathways Regulate Perennial Surface Water Dynamics In An Arid Basin", Sarah Mcknight, David F. Boutt, Lee Ann Munk, Brendan Moran Jan 2022

Data For "Distinct Hydrologic Pathways Regulate Perennial Surface Water Dynamics In An Arid Basin", Sarah Mcknight, David F. Boutt, Lee Ann Munk, Brendan Moran

Data and Datasets

In water-stressed arid basins, questions continue to mount over the compounding impacts of anthropogenic groundwater extraction and climate-driven perturbations on groundwater-surface water interactions and the resulting resilience of ecosystem-critical surface waters. Coupling groundwater and surface water level observations with surface water extents from Sentinel-2 data provides an unprecedented opportunity to evaluate surface water connectivity with local aquifers following intense, sporadic precipitation events in arid basins. Surface water area, surface water level, and groundwater level data were analyzed for trends following precipitation, including peak lag time, post-peak decline rates, and changes in hydraulic gradients. Results indicate variable connectivity following precipitation events …


Data For "Relic Groundwater And Mega Drought Confound Interpretations Of Water Sustainability And Lithium Extraction In Arid Lands", Brendan J. Moran, David F. Boutt, Sarah V. Mcknight, Jordan Jenckes, Lee Ann Munk, Daniel Corkran, Alexander Kirshen Nov 2021

Data For "Relic Groundwater And Mega Drought Confound Interpretations Of Water Sustainability And Lithium Extraction In Arid Lands", Brendan J. Moran, David F. Boutt, Sarah V. Mcknight, Jordan Jenckes, Lee Ann Munk, Daniel Corkran, Alexander Kirshen

Data and Datasets

This repository contains raw data from this publication including hydrogeochemistry, model calculations, groundwater levels, and remotely sensed data compiled and extracted using Google Earth Engine.


Supporting Data – Floating Gardens, Chicago River, April 29, 2018 To November 19, 2019, Eric Wade Peterson, Phil Nicodemus, Emmett Andrew Spooner Jan 2021

Supporting Data – Floating Gardens, Chicago River, April 29, 2018 To November 19, 2019, Eric Wade Peterson, Phil Nicodemus, Emmett Andrew Spooner

Faculty Publications-- Geography, Geology, and the Environment

Between April 29, 2018 to November 19, 2019, water samples were collected upstream and downstream of a floating garden installed along the Chicago River. At each location, samples were collected at the surface and at 0.3 m below the surface. In-situ measurements of Dissolved Oxygen, Specific Conductance, and Temperature were recorded with a YSI 85. Anion samples were analyzed using a Ion Chromatograph for fluoride (F-), chloride (Cl-), nitrate as nitrogen (NO3-N), phosphate (PO4-3), and sulfate (SO4-2). The available dataset provides the recorded field parameters and the analyzed …


Supporting Data - Recycling Of Nitrate And Organic Matter By Plants In The Vadose Zone Of A Saturated Riparian Buffer, Patience Bosompemaa, Eric Wade Peterson, William Perry, Wondwosen M. Seyoum Jan 2021

Supporting Data - Recycling Of Nitrate And Organic Matter By Plants In The Vadose Zone Of A Saturated Riparian Buffer, Patience Bosompemaa, Eric Wade Peterson, William Perry, Wondwosen M. Seyoum

Faculty Publications-- Geography, Geology, and the Environment

Data from the analysis of nitrate as nitrogen in the soil and soil pore water within the vadose zone of a saturated riparian buffer (SRB). Additional properties measured include: Organic matter (as %), bulk density, moisture content, and porosity. Soil samples were collected pre-growing season (n=57) and post-growing season from two plots (n=29): vegetated plots and barren plots. Statistical comparison of among the treatments, Pre-growing season, plot with plants, and barren plot, and among the different depths, 30 cm, 60 cm, and 90 cm identified significantly different soil NO3--N concentrations. Plots with plants experienced a reduction in …


Compiled Dataset From The National Reservoir Research Program 1989 Dataset, Nicky M. Faucheux, Leandro E. Miranda Jan 2021

Compiled Dataset From The National Reservoir Research Program 1989 Dataset, Nicky M. Faucheux, Leandro E. Miranda

College of Forest Resources Publications and Scholarship

This dataset was compiled from the National Reservoir Research Program 1989 dataset. The NRRP dataset includes data from rotenone and creel studies at reservoirs throughout the continental US during the 1980s. We compiled the species level biomass data into total biomass for each of five trophic guilds (piscivores, detritivores, herbivores, invertivores, and planktivores). This compiled dataset was used to investigate the Cascading Reservoir Continuum Concept across 16 river basins in a study conducted by the 2020 Management of Impounded Rivers Class.


Results From "Impact Of Hydrostratigraphic Continuity In Heterogeneity On Brine-To-Freshwater Interface Dynamics; Implications From A 2-D Parametric Study In An Arid And Endorheic Basin", Sarah Mcknight, David F. Boutt, Lee Ann Munk Jan 2020

Results From "Impact Of Hydrostratigraphic Continuity In Heterogeneity On Brine-To-Freshwater Interface Dynamics; Implications From A 2-D Parametric Study In An Arid And Endorheic Basin", Sarah Mcknight, David F. Boutt, Lee Ann Munk

Data and Datasets

No abstract provided.


Data For "Hydrogeologic And Geochemical Distinctions Within Freshwater Brine Systems In Salar Environments", Lee Ann Munk, David F. Boutt, Brendan Moran, Sarah Mcknight, Jordan Jenckes Jan 2020

Data For "Hydrogeologic And Geochemical Distinctions Within Freshwater Brine Systems In Salar Environments", Lee Ann Munk, David F. Boutt, Brendan Moran, Sarah Mcknight, Jordan Jenckes

Data and Datasets

All chemistry and striontium isotope data for the study, "Hydrogeologic and Geochemical Distinctions within Freshwater Brine Systems in Salar Environments".


Dam Impoundments Sediment Mass – Tributaries To The Hudson River, Brian Yellen, Jonathan Woodruff Jan 2020

Dam Impoundments Sediment Mass – Tributaries To The Hudson River, Brian Yellen, Jonathan Woodruff

Data and Datasets

This repository contains data from sediment cores collected during 2017-2018 from 17 impoundments that are located on tributaries to the tidal portion of the Hudson River as part of a larger NERRs collaborative project entitled Dams and Sediment on the Hudson (DaSH). A companion dataset that contains sediment core data from Hudson tidal marshes is archived at UMass Scholarworks data repository. Sediment cores collected from impoundments behind dams were recovered via piston push coring, which tends to minimize compaction and be representative of true sediment thicknesses. The general workflow for cores included (1) splitting; (2) Itrax XRF scanning; (3) subsampling …


Terrestrial Lidar Raw Dataset For: Stemflow Dynamics In Relation To Individual Tree Canopy Structure, Neighborhood Conditions, And Meteorological Factors, Sandra A. Yankine, John T. Van Stan Ii, Jean-Francois Cote, Anke Hildebrandt, Dylan C. Mesta, Gustavo O. Maldonado, Jan Friesen Jan 2018

Terrestrial Lidar Raw Dataset For: Stemflow Dynamics In Relation To Individual Tree Canopy Structure, Neighborhood Conditions, And Meteorological Factors, Sandra A. Yankine, John T. Van Stan Ii, Jean-Francois Cote, Anke Hildebrandt, Dylan C. Mesta, Gustavo O. Maldonado, Jan Friesen

Faculty Datasets

These are raw 3-D (x,y,z) point files of a forest plot. Scans were collected at Herty Pines in Statesboro, Georgia, USA. Scans were collected using a Leica ScanStation C-10. Files were co-registered using Leica Cyclone II. Although file extension is ".pts" these are in ASCII format.


Total Suspend Solids Concentration (Mg L-1), Xiaodong Zhang Ph.D, Afshin Shabani Jan 2017

Total Suspend Solids Concentration (Mg L-1), Xiaodong Zhang Ph.D, Afshin Shabani

Datasets

Collected at the water surface.


Spatially Distributed Pothole Depth Data, Xuefeng Michael Chu Ph.D, Kendall Grimm, Mohsen Tahmasebi Nasab, Ning Wang, Mohammad Hadi Bazrkar, Lan Zeng, Matt Lee, Jamal Ghauri, Dillon Ekholm, Jackie Arntson, Libby Kruse, Jared Swanberg Jan 2017

Spatially Distributed Pothole Depth Data, Xuefeng Michael Chu Ph.D, Kendall Grimm, Mohsen Tahmasebi Nasab, Ning Wang, Mohammad Hadi Bazrkar, Lan Zeng, Matt Lee, Jamal Ghauri, Dillon Ekholm, Jackie Arntson, Libby Kruse, Jared Swanberg

Datasets

The locations of our surveyed potholes are located in the Cottonwood Lake Study Area (CLSA) of the USGS Northern Prairie Wildlife Research Center (NPWRC). RiverSurveyor M9 by SonTec (RiverSurveyor M9) was utilized to obtain spatially distributed pothole depth data. This way a modified DEM was created which reflected the pothole bathymetry rather than the water surface elevations. The M9 records water depths using multi-band multiple acoustic frequencies from the vertical beam which “pings” the pothole bed while simultaneously collecting the GPS coordinates of each “ping”. High ping rates ensure robust data collection and high resolution. The vertical beam can measure …


Temporal Pothole Depth Data, Xuefeng Michael Chu Ph.D, Kendall Grimm, Mohsen Tahmasebi Nasab, Ning Wang, Mohammad Hadi Bazrkar, Lan Zeng, Matt Lee, Jamal Ghauri, Dillon Ekholm, Jackie Arntson, Libby Kruse, Jared Swanberg Jan 2017

Temporal Pothole Depth Data, Xuefeng Michael Chu Ph.D, Kendall Grimm, Mohsen Tahmasebi Nasab, Ning Wang, Mohammad Hadi Bazrkar, Lan Zeng, Matt Lee, Jamal Ghauri, Dillon Ekholm, Jackie Arntson, Libby Kruse, Jared Swanberg

Datasets

The locations of our surveyed potholes are located in the Cottonwood Lake Study Area (CLSA) of the USGS Northern Prairie Wildlife Research Center (NPWRC).The HOBO pressure transducers (HOBO Pressure Transducer) used in this hydrologic monitoring study are wireless water level loggers with Bluetooth capabilities for data download. These sensors have a 3-point NIST-traceable calibration certificate from ONSET. They were self-calibrated/lab tested by our NDSU hydrologic modeling group. The measured water level accuracy is ± 0.05 – 0.1%. The sensors were installed in the summers of 2016 and 2017 and removed in late September or early October of each year, respectively. …


Geochemical And Stratigraphic Analysis Of The Linnévatnet Sediment Record: A Study Of Late Holocene Cirque Glacier Activity In Spitsbergen, Svalbard, Graham Harper Edwards May 2014

Geochemical And Stratigraphic Analysis Of The Linnévatnet Sediment Record: A Study Of Late Holocene Cirque Glacier Activity In Spitsbergen, Svalbard, Graham Harper Edwards

Honors Projects

Morainal and lacustrine sediments in Linnédalen, Spitsbergen, Svalbard, record the fluctuations of a glacier in a currently unglaciated mountain cirque during the Little Ice Age (LIA). This study attempts to reconstruct Late Holocene glacial activity within this cirque from geochemical, physical, and visual stratigraphic variation of the Linnévatnet lacustrine sediment record. A 57 cm lacustrine sediment core (D10.5) from Linnévatnet was analyzed at a high-resolution for variations in X-Ray Fluorescence (XRF)-measured elemental composition, spectral reflectance, and magnetic susceptibility. The visual stratigraphy was observed at a microscopic scale. An age-depth model for D10.5 is developed by extrapolating sedimentation rates from dated …


A Working Plan For The Woodlands Of The New Haven Water Company; Prepared After Five Years Of Forest Practice, 1908 To 1912, Ralph C. Hawley Jul 1913

A Working Plan For The Woodlands Of The New Haven Water Company; Prepared After Five Years Of Forest Practice, 1908 To 1912, Ralph C. Hawley

Yale School of the Environment Bulletin Series

Soon after the establishment of the Yale Forest School in 1900, the necessity developed for finding forest lands near the city of NewHaven upon which to conduct field work. It was found that many of the most accessible and best timbered tracts were owned by the New Haven Water Company....about 250 acres near the Maltby Lakes were placed under the management of the Yale Forest School. ...a written plan is desirable. The plan is divided into two parts: the first, descriptive of present conditions and passt accomplishments; the second, treating of the policy to be pursued.