R. SAJDAK 42.886° N · 78.878° W

Field Sites · Complete Index

Projects

Everything I've built and put online, sorted by category. Maps, live data, classroom tools and things that print.

105 entries · 11 categories

New maps

14 entries
A view of the Great Lakes Waves map Great LakesGreat Lakes WavesHow tall the waves are on all five lakes right now, and the biggest seas in the next five days. A view of the The St. Lawrence, in Motion map Great LakesThe St. Lawrence, in MotionThe current from Lake Ontario to the Atlantic, with the tide at Quebec City. A view of the Lake Erie, Painted by Its Own Current map Great LakesLake Erie, Painted by Its Own CurrentA Starry Night of Lake Erie where every brushstroke follows the water. A view of the Lake Erie, in Motion map Great LakesLake Erie, in MotionA live current map of the whole lake, at the surface and along the bottom. A view of the The Niagara River, in Motion map Great LakesThe Niagara River, in MotionThe current from Lake Erie to Lake Ontario, driven live by the river gauges. A view of the Lake Huron to Lake Erie, in Motion map Great LakesLake Huron to Lake Erie, in MotionThe St. Clair River, Lake St. Clair and the Detroit River, flowing live. A view of the Sewage in the Water map New YorkSewage in the WaterEvery untreated sewage overflow reported in New York, live, over all 911 permitted outfalls. A view of the What’s Still in the Ground map BuffaloWhat’s Still in the GroundAll 110 State Superfund sites in Erie and Niagara counties, and what is in each one. A view of the Love Canal Is Still There map BuffaloLove Canal Is Still ThereLove Canal from 1938 to 2026 on one map, from the open canal to the fenced 70 acres. A view of the Isaias, in Motion map WeatherIsaias, in MotionThe wind field around Hurricane Isaias, hour by hour, with the forecast cone. A view of the Buffalo’s Schools, Mapped map BuffaloBuffalo’s Schools, MappedEvery district and charter school, sized by enrollment, with the eight proposed to close. A view of the Buffalo’s Schools by Race and Ethnicity map BuffaloBuffalo’s Schools by Race and EthnicityEach school drawn as a pie chart of who goes there. A view of the Every Pizzeria in Erie County map BuffaloEvery Pizzeria in Erie CountyLocal shops against the chains, and pizzerias per person in every town. A view of the Adirondack Public Land map AdirondacksAdirondack Public LandEvery acre of Forest Preserve and state easement inside the Blue Line, over satellite.

Adirondacks

12 entries
01 The Adirondack Lab The hub for all of the Adirondack maps and experiments below. 02 Wilderness Overlook An orbiting 3D terrain view of every wilderness area, wild forest and canoe area in the park. 03 Off the Grid How far from a road you can get anywhere in the park, and the deepest spot at West Canada Lake. 04 The Biggest Blank Spots The longest straight line you can walk on public land without crossing a road or railroad. 05 Century Century-old USGS topo maps draped over today's 3D terrain. 06 The Darkest Sky A light-pollution map of the park showing where the night sky is darkest. 07 All the Water Every lake, pond and stream inside the Blue Line, with a free print-size download. 08 Dead Center Seven different ways to find the middle of the Adirondack Park, and where each one lands. 09 Highest Private Land The highest ground in the park that is neither Forest Preserve nor open to the public, on a shoulder of Lyon Mountain. 10 Roads Inside the Blue Line Every mile of public road in the park, split by pavement, agency, county and town. 11 Map Prints Frame any lake or stretch of water and turn it into a printable poster. 12 Adirondack Public Land Every acre of Forest Preserve and state easement inside the Blue Line, over satellite, with private land dimmed.

Great Lakes

16 entries
01 The Floor of the Great Lakes A tiltable depth map of all five lake bottoms on one scale. 02 Closest to the Most Great Lakes The spot on land that sits closest to two, three, four or all five lakes. 03 The Erie Seiche Watch Lake Erie tilt and slosh live, from fourteen water-level gauges. 04 Every Creek, Right Now Live stream gauges across the Lake Erie watershed, colored by how each creek compares to normal. 05 The Lake, Right Now The Buffalo buoy, harbor gauge and HRRR forecast for Lake Erie on one screen. 06 Without Leaving the Water Every stretch of water a boat can reach from New York Harbor, with a route finder. 07 Upper Niagara Fishing Guide A season-by-season fishing guide to the upper Niagara, built on the DEC regulations. 08 Shipwrecks of Erie and Superior Both lakes with the water taken out and 530 wrecks on the floor. Tap one for its name, year and depth. 09 Shipwrecks of Lake Erie All 280 wrecks with a known position, over the lake floor. A free 36 by 24 inch print. 10 Around the Falls A live map of the Niagara water sent around the falls to the power plants on both sides of the border. 11 Great Lakes Waves How tall the waves are on all five lakes right now, and the biggest seas in the next five days. 12 Lake Erie, in Motion A live current map of the whole lake, at the surface and along the bottom. 13 The Niagara River, in Motion The current from Lake Erie to Lake Ontario, driven live by the river gauges. 14 Lake Huron to Lake Erie, in Motion The St. Clair River, Lake St. Clair and the Detroit River, flowing live. 15 The St. Lawrence, in Motion The current from Lake Ontario to the Atlantic, with the tide at Quebec City. 16 Lake Erie, Painted by Its Own Current A Starry Night of Lake Erie where every brushstroke follows the water.

Rivers & watersheds

9 entries
01 The Great Lakes Watershed Every river and stream in two countries that drains to one of the five lakes. 02 The Lake Ontario Watershed Every river and stream on both sides of the border that ends up in Lake Ontario. 03 The St. Lawrence Watershed Everything the St. Lawrence collects below Lake Ontario, from the Ottawa to the Saguenay. 04 The Hudson Every river and creek in the Hudson watershed, and the 154 miles of it that are tidal. 05 The Allegheny in New York The one corner of New York whose water flows to the Gulf of Mexico. 06 All the Water in New York Every named lake, river and stream in the state. 07 Where the Rain Goes Every river in the lower 48 and the divides that sort them into six seas. 08 The Okavango Every river that reaches the Okavango Delta, cut from a 30 m elevation model. 09 Sewage in the Water Every untreated sewage overflow reported in New York, live, over all 911 permitted outfalls.

Buffalo & New York

22 entries
01 Buffalohenge The days the setting sun lines up straight down each Buffalo street. 02 Where the Trees Aren't The city's 59,801 empty street tree spots, mapped next to the trees that are there. 03 The Canopy Buffalo's real tree canopy from aerial imagery and lidar, and what the city's list misses. 04 Ten Minutes to a Park How much of Buffalo can walk to a park in ten minutes. 05 How Far to the Playground Walking time from every street in Buffalo to the nearest playground. 06 Buffalo 311 Search and filter every service request the city has logged. 07 Buffalo’s Empty Lots Every vacant parcel in the city, about seven Delaware Parks of empty land. 08 Buffalo’s Darkest Morning Every sunrise and sunset of the year on one chart. The latest sunrise comes at Halloween, not January. 09 Lead in Buffalo School Water How many taps and fountains in each Buffalo public school tested above 5 parts per billion for lead. 10 Buffalo by the Decade A century of Buffalo's demographic change in interactive charts. 11 Niagara Falls by the Decade The rise and fall of the Power City in census charts. 12 The Niagara Frontier What a single Buffalo, Fort Erie and Niagara metro area across the border would contain. 13 The Water Under Buffalo Two hundred years of creeks, canals and shoreline, slid over today's streets. 14 100+ Summer Outdoor Activities A map of parks, beaches, preserves and waterfront towns around Western New York. 15 The Quietest Place in New York A map of how loud every acre of the state is on a summer day. 16 Within Twenty-Five Miles Every tornado New York has on record, plus today's forecast. 17 Stargazing Tonight Where the sky is both dark and clear tonight, and the closest such place to each city. New every afternoon. 18 Buffalo's Schools, Mapped Every district and charter school, sized by enrollment, with the eight proposed to close. 19 Buffalo's Schools by Race and Ethnicity Each school drawn as a pie chart of who goes there. 20 What's Still in the Ground All 110 State Superfund sites in Erie and Niagara counties, and what is in each one. 21 Love Canal Is Still There Love Canal from 1938 to 2026 on one map, from the open canal to the fenced 70 acres. 22 Every Pizzeria in Erie County Local shops against the chains, and pizzerias per person in every town.

Remoteness

5 entries
01 Twenty-One Miles The farthest you can get from a road in the lower 48 is 21.64 miles, in Yellowstone. 02 Two Hundred and Sixty-Eight Miles The farthest you can get from a road in Canada, on Victoria Island. 03 The Working Wilderness How far from a road you can get in Algonquin Park, with and without the logging roads. 04 Never Far Nowhere in the Athens Unit of Wayne National Forest is more than 0.86 miles from a road. 05 The Deepest Forest How far inside Madagascar's forest you could stand in 1953, and how far today.

Maps elsewhere

8 entries
01 The Far Side Which country is farthest from the United States, measured soil to soil. 02 Live Earth A rotating globe with today's satellite imagery, city lights and the day-night line. 03 Storm Height Radar echo tops in 3D, showing how tall storms are anywhere in the US. 04 HRRR Portal High-resolution weather model maps, read straight from the raw forecast data. 05 Powers of the Universe A 3D scale map that zooms from the Moon to the edge of the observable universe. 06 Gaza, Before and After Drag a line across the Gaza Strip to compare May 2023 satellite imagery with the newest available. 07 Ukraine, Before and After The same swipe map for the cities of eastern Ukraine, before the 2022 invasion and now. 08 Isaias, in Motion The wind field around Hurricane Isaias, hour by hour, with the forecast cone.

Energy & climate

7 entries
01 What Powers New York New York's live grid mix, including the imported power the official numbers leave out. 02 New York's Power Mix, 1990 to 2024 How the state's electricity sources have changed over 35 years. 03 Wind & Solar Overtake Fossil Fuels in Germany German electricity by source since 1990, rebuilt from the raw data. 04 Could Germany's Energy Transition Work in New York? A geography and climate comparison of Germany and New York. 05 The True Cost of Electricity What each power source costs once environmental damage is added in. 06 Earth Overshoot Day The date each year when humanity uses up what the planet can regrow, since 1972. 07 Forest Fires & Climate Change An infographic on how burning fossil fuels raises forest-fire risk.

Apps & tools

9 entries
01 Navigate the Past Every USGS map ever printed of the spot where you're standing, with GPS. 02 Find My Town Names the US town you're standing in and draws its boundary. 03 Talk to the Sky Text a question from any phone, even over satellite, and get a short AI answer back. 04 Bag & Box Maker Printable gift bag, tuck box and tray templates drawn to exact size. 05 Map Medallions Turns any patch of ground into a laser file sized to a real coaster, tag or blank. 06 Extension Cord Amp Chart How much current an extension cord can safely carry by gauge and length. 07 Sortify An AI task organizer that sorts a messy to-do list for you. 08 Wonder One small science question every day, in a five-minute field note. 09 Uncommon Prep Exam prep courses for New York wildlife rehabilitators, falconers and licensed guides.

3D printing

8 entries
01 Makerspace The hub for the printing tools below, and how they all work. 02 Tolerance Kit Print one small plate and measure your printer and filament once: what a hole must add to fit, and how far a snap arm can bend. 03 Adapter Maker Builds a 3D printable adapter between any two round or oval ports, and hands you the STL. 04 Bracket Maker Builds a 3D printable bracket at any angle, with the screw holes where you need them. 05 Hook Maker Builds a 3D printable hook to screw, stick or wrap over a door, and says how many kilograms it holds and which part of it gives first. 06 Bushing & Standoff Maker Builds a 3D printable spacer, standoff, bushing or grommet from the hole it goes into and the bolt that goes through it. 07 Keychain Maker Turns a name into a 3D printable keychain, on a plate, on a bar or as joined up letters. 08 ESP32 Case A free snap-together 3D printable case for an ESP32 dev board.

Classroom

7 entries
01 Classboard A free board for the classroom screen with a clock, a timer and today's agenda. 02 UDL Check Paste a lesson plan and get an honest read against the UDL Guidelines. 03 Specially Designed Instruction A training unit on turning an IEP into daily instruction. 04 Ability Test Practice Timed practice for the test Buffalo uses for City Honors and Olmsted admission. 05 Math Meadow Ten kindergarten math games with a read-aloud voice. 06 Environmental Science My environmental science course page. 07 Anatomy & Physiology My anatomy and physiology course page.

Games

3 entries
01 Mosquito Hunter Play the mosquito and bite as many hikers as you can in 60 seconds. 02 Christmas Cookie Challenge Steer with the arrow keys and eat as many Christmas cookies as you can. 03 Chess Cubed Chess on an 8x8x8 cube. Play a friend or the computer.