2f:T830,Plot.plot({ marks: [ Plot.areaY(timeline, { x: "year", y1: -50, y2: "diffPreDiversion", curve: "natural", fill: "#d1e5ff", filter: (d) => d.year >= 1930 }), Plot.lineY(timeline, { x: "year", y: "diffPreDiversion", stroke: "red", strokeWidth: 10, filter: (d) => d.year >= 1930, curve: "natural" }), Plot.ruleY([5], { x1: 1994, x2: 2017, stroke: "orange", strokeWidth: 6, strokeDasharray: "4,3" }), Plot.ruleY([0], { x1: 1941, x2: 2017, stroke: "yellow", strokeWidth: 2, strokeDasharray: "4,3" }), Plot.tip( [ `Mono Lake level mandated by Decision D-1631 in 1994 (6,392 feet above sea level)` ], { x: 1994, y: 6392 - 6417, anchor: "bottom", stroke: "gainsboro" } ), Plot.tip([`1940 (pre-diversion) level: 6,417 ft`], { x: 1970, y: 0, anchor: "bottom", stroke: "gainsboro" }), Plot.dot(timeline, { x: "year", y: "diffPreDiversion", r: 4, stroke: "#275bc4", strokeWidth: 2, fill: "dodgerblue", filter: (d) => d.detail != null }), Plot.frame({ stroke: "gray" }), Plot.tip( timeline, Plot.pointerX({ x: "year", y: "diffPreDiversion", title: (d) => d.detail == null ? `Year: ${d.year}\nChange from pre-diversion level: ${d3.format( "," )(d.diffPreDiversion)} ft` : `Year: ${d.year}\nChange from pre-diversion level: ${d3.format( "," )(d.diffPreDiversion)} ft\n\n${d.detail}`, stroke: "gainsboro", opacity: 0.95 }) ) ], y: { domain: [-50, 10], ticks: 5, label: "Difference in lake level (feet) from pre-diversion level\n recorded in 1940 (6,417 feet above sea level)" }, x: { tickFormat: "Y", domain: [1930, d3.max(monoYearly, (d) => d.year)], label: null, ticks: 10 }, height: 500, width: 800, margin: 30 })30:T5fc,monoTimeline = [ { year: 1941, event: "Diversions begin", detail: "In 1941, the Los Angeles Department of Water & Power (LADWP) begins diverting water from Mono Lake's tributary streams into an aqueduct that provides water for the growing Los Angeles area." }, { year: 1978, event: "Mono Lake Committee formed", detail: "In March 1978, David and Sally Gaines establish the Mono Lake Committee. Shortly after, they open the Mono Lake Committee Information Center & Bookstore, which you can still visit today." }, { year: 1983, event: "CA Supreme Court and Public Trust", detail: 'In 1983, the Supreme Court of California determined that Mono Lake\'s "public trust values" override existing water rights, meaning that water diversions by LA DWP would be revisited to support the recovery and protection of Mono Lake and its tributary streams. This is considered one of the top environmental legal victories of the last century.' }, { year: 1994, event: "Decision 1631", detail: 'On September 28, 1994, the California State Supreme Court approve Decision 1631 "amending water right licenses to establish fishery protection flows in streams tributary to Mono Lake and to protect public trust resources at Mono Lake and in the Mono Lake Basin."' }, { year: 1981, event: "Mono Lake Tufa State Reserve established", detail: "The shores of Mono Lake, including areas with iconic tufa towers, are protected as a State Reserve." } ]31:T64b,32:[{"id":"1b50263bf3320e9f8555327de77ea8d66b33c02793c59dbc3d7bfb72cbf5cf2c02401d4be391d1badc8e06ef7c172f82026233d70f473c19dde0687674cb7c82","href":"https://static.observableusercontent.com/files/1b50263bf3320e9f8555327de77ea8d66b33c02793c59dbc3d7bfb72cbf5cf2c02401d4be391d1badc8e06ef7c172f82026233d70f473c19dde0687674cb7c82","name":"pop-up-mono-lake.png","type":"image/png","lastModified":1686939083517.463,"size":1100655},{"id":"c28a80dd8c0dd0e21389cf56f701d7d786cd00ce6cbb0275f05188ff527a16b595b72f091cbdce5cb25441c9a8a76b884b5ad5ed0a13abf312e834e420b831f3","href":"https://static.observableusercontent.com/files/c28a80dd8c0dd0e21389cf56f701d7d786cd00ce6cbb0275f05188ff527a16b595b72f091cbdce5cb25441c9a8a76b884b5ad5ed0a13abf312e834e420b831f3","name":"monoData@1.xlsx","type":"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet","lastModified":1686939083517.463,"size":31215}] 2d:{"title":"Pop-up learning: Make an interactive chart of Mono Lake levels in Observable Plot with Allison Horst","cells":[{"id":729,"value":"\n

\n\n \n

","pinned":false,"hidden":false,"mode":"html"},{"id":696,"value":"Join Allison for a casual learning session where you can follow along to start building the interactive chart of Mono Lake levels shown below with [Observable Plot](https://observablehq.com/plot/). No previous Observable or Plot experience necessary. All you need to follow along is an Observable account. We’ll see you there! ","pinned":false,"hidden":false,"mode":"md"},{"id":750,"value":"___","pinned":false,"hidden":false,"mode":"md"},{"id":18,"value":"$2f","pinned":false,"hidden":false,"mode":"ojs"},{"id":185,"value":"**Data:** Mono Lake timeline and annual lake levels from the [Mono Basin Clearinghouse](https://www.monobasinresearch.org/index.php).","pinned":false,"hidden":false,"mode":"md"},{"id":686,"value":"____","pinned":false,"hidden":false,"mode":"md"},{"id":717,"value":"## Sign up for the session ","pinned":false,"hidden":false,"mode":"md"},{"id":702,"value":"","pinned":false,"hidden":false,"mode":"html"},{"id":422,"value":"---\n## Appendix","pinned":false,"hidden":false,"mode":"md"},{"id":46,"value":"monodata = FileAttachment(\"monoData@1.xlsx\").xlsx()","pinned":false,"hidden":false,"mode":"ojs"},{"id":13,"value":"monoYearly = monodata.sheet(0, { headers: true })","pinned":false,"hidden":false,"mode":"ojs"},{"id":66,"value":"$30","pinned":false,"hidden":false,"mode":"ojs"},{"id":108,"value":"monoCombo = DuckDBClient.of({ timeline: monoTimeline, levels: monoYearly })","pinned":false,"hidden":false,"mode":"ojs"},{"id":104,"value":"SELECT *, (lake - 6417) as diffPreDiversion FROM levels\nLEFT JOIN timeline\nON levels.year = timeline.year\nORDER BY levels.year","pinned":true,"hidden":true,"mode":"sql","output":"timeline","database":"var:monoCombo"},{"id":684,"value":"$31","pinned":false,"hidden":false,"mode":"md"}],"files":"$W32","stdlib":"1","titling":"auto"}