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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Sierra Streamflow Monitor</title>
<link rel="preconnect" href="https://fonts.googleapis.com">
<link href="https://fonts.googleapis.com/css2?family=Playfair+Display:wght@700;900&family=Source+Serif+4:ital,wght@0,300;0,400;0,600;1,300&family=Roboto+Condensed:wght@400;700&display=swap" rel="stylesheet">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.9.4/leaflet.min.css"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.9.4/leaflet.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/4.4.1/chart.umd.min.js"></script>
<style>
:root {
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--river: #2E7D8C;
--river-lt: #4AACBF;
--ochre-lt: #DFA050;
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--alert: #C23B22;
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--text-muted:#7A6248;
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html{font-size:14px;}
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font-family:'Source Serif 4',Georgia,serif;
background:var(--bark);
color:var(--parchment);
min-height:100vh;
}
/* ── PAGE ── */
.page{max-width:1600px;margin:0 auto;padding:0 32px 80px;}
/* ── HEADER ── */
.site-header{
padding:36px 0 28px;
border-bottom:1px solid var(--bark-lt);
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/* ── RADIAL LAYOUT SECTION TITLE ── */
.section-label{
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/* ── RADIAL MAP LAYOUT ── */
/*
3-column grid: [left charts] [center map] [right charts]
Left col: stations that are geographically W of watershed center
Right col: stations that are E / high country
*/
.radial-layout{
display:grid;
grid-template-columns:1fr 420px 1fr;
grid-template-rows:auto;
gap:0 24px;
align-items:center;
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/* SVG overlay for leader lines — sits on top of everything */
#leader-svg{
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pointer-events:none;
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overflow:visible;
}
/* ── CENTER MAP ── */
.map-col{
grid-column:2;
grid-row:1/99;/* span all rows */
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.map-title{font-family:'Roboto Condensed',sans-serif;font-size:10px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--ochre-lt);}
#watershed-map{
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.legend-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0;}
/* ── CHART COLUMNS ── */
.left-col{
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display:flex;flex-direction:column;
gap:18px;
padding-top:8px;
}
.right-col{
grid-column:3;
display:flex;flex-direction:column;
gap:18px;
padding-top:8px;
}
/* ── MINI CHART CARD ── */
.mcard{
background:var(--parchment);
border-radius:4px;
overflow:hidden;
box-shadow:0 3px 16px rgba(0,0,0,.3);
transition:transform .15s,box-shadow .15s;
}
.mcard:hover{transform:translateY(-1px);box-shadow:0 6px 24px rgba(0,0,0,.4);}
.mcard-head{
padding:8px 12px 4px;
background:var(--cream);
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.mcard-name{
font-family:'Roboto Condensed',sans-serif;font-size:11px;font-weight:700;
letter-spacing:.06em;text-transform:uppercase;color:var(--text-mid);
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.mcard-flow{font-family:'Playfair Display',serif;font-size:20px;font-weight:900;color:var(--bark);line-height:1;}
.mcard-unit{font-family:'Source Serif 4',serif;font-style:italic;font-size:10px;color:var(--text-muted);font-weight:300;}
.mcard-chart{padding:4px 8px 6px 4px;height:90px;position:relative;}
.mcard-legend{
position:absolute;top:5px;right:10px;
display:flex;gap:8px;
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.mcl-item{display:flex;align-items:center;gap:3px;font-family:'Roboto Condensed',sans-serif;font-size:8px;color:var(--text-muted);letter-spacing:.04em;}
.mcl-swatch{width:14px;height:1.5px;border-radius:1px;}
.mcl-swatch.hist {background:rgba(180,155,120,.55);}
.mcl-swatch.median {background:#8C6E45;}
.mcl-swatch.current{background:#1B7A6E;height:2px;}
.mcard-foot{
padding:5px 12px;
background:var(--cream);
border-top:1px solid rgba(90,62,34,.08);
display:flex;justify-content:space-between;align-items:center;
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.mcard-meta{font-family:'Roboto Condensed',sans-serif;font-size:9px;color:var(--text-muted);letter-spacing:.04em;}
.mcard-pills{display:flex;gap:5px;align-items:center;}
.status-pill{
display:inline-block;padding:1px 6px;border-radius:2px;
font-family:'Roboto Condensed',sans-serif;font-size:8px;font-weight:700;
letter-spacing:.12em;text-transform:uppercase;
}
.status-pill.NORMAL {background:rgba(122,140,110,.2);color:#3A5230;}
.status-pill.ELEVATED{background:rgba(196,135,58,.2);color:#7A4500;}
.status-pill.HIGH {background:rgba(168,75,42,.2);color:#7A2800;}
.status-pill.FLOOD {background:rgba(194,59,34,.2);color:#8A1500;}
.status-pill.no_data,
.status-pill.error {background:rgba(122,98,72,.15);color:var(--text-muted);}
.delta-chip{
font-family:'Roboto Condensed',sans-serif;font-size:9px;font-weight:700;
padding:1px 5px;border-radius:2px;
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.delta-chip.pos{background:rgba(168,75,42,.12);color:#8B2500;}
.delta-chip.neg{background:rgba(27,122,110,.12);color:#1B5C70;}
.delta-chip.flat{background:rgba(122,98,72,.1);color:var(--text-muted);}
/* no-data placeholder */
.mcard-nodata{
background:rgba(255,255,255,.04);border:1px solid var(--bark-lt);
border-radius:4px;padding:14px 16px;
font-style:italic;color:var(--sand);font-size:12px;
}
/* ── CARD CONNECTOR DOTS (small anchor on card edge) ── */
.mcard-anchor{
width:8px;height:8px;border-radius:50%;
background:var(--teal-lt);border:2px solid var(--parchment);
position:absolute;top:50%;
z-index:20;
}
.left-col .mcard-anchor{right:-4px;transform:translateY(-50%);}
.right-col .mcard-anchor{left:-4px; transform:translateY(-50%);}
/* ── FULL CHART SECTION BELOW ── */
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.river-heading{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.river-heading h2{font-family:'Playfair Display',serif;font-size:16px;font-weight:700;color:var(--parchment);}
.river-line{flex:1;height:1px;background:linear-gradient(to right,var(--bark-lt),transparent);}
.full-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(380px,1fr));gap:16px;}
/* FULL-SIZE SPAGHETTI CARD */
.scard{
background:var(--parchment);border-radius:5px;overflow:hidden;
box-shadow:0 4px 20px rgba(0,0,0,.28);
display:grid;grid-template-columns:175px 1fr;grid-template-rows:1fr auto;
}
.scard-meta{
padding:15px 14px;background:var(--cream);
border-right:1px solid rgba(90,62,34,.12);
display:flex;flex-direction:column;gap:8px;justify-content:space-between;
}
.scard-name{font-family:'Roboto Condensed',sans-serif;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--text-mid);line-height:1.3;}
.scard-flow{font-family:'Playfair Display',serif;font-size:32px;font-weight:900;line-height:1;color:var(--bark);}
.scard-unit{font-family:'Source Serif 4',serif;font-style:italic;font-size:11px;color:var(--text-muted);font-weight:300;}
.scard-metrics{display:flex;flex-direction:column;gap:3px;}
.scard-metric{display:flex;justify-content:space-between;font-family:'Roboto Condensed',sans-serif;font-size:10px;}
.scard-metric-label{color:var(--text-muted);}
.scard-metric-val{font-weight:700;color:var(--text-main);}
.scard-metric-val.pos{color:#8B2500;}
.scard-metric-val.neg{color:#1B5C70;}
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.cl-swatch.hist {background:rgba(180,155,120,.55);}
.cl-swatch.median {background:#8C6E45;}
.cl-swatch.current{background:#1B7A6E;height:2px;}
.scard-footer{
grid-column:1/-1;display:flex;justify-content:space-between;align-items:center;
padding:6px 14px;border-top:1px solid rgba(90,62,34,.1);background:var(--cream);
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.scard-link{font-family:'Roboto Condensed',sans-serif;font-size:9px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--river);text-decoration:none;}
.scard-link:hover{text-decoration:underline;}
/* FOOTER */
.site-footer{
margin-top:56px;padding-top:20px;border-top:1px solid var(--bark-lt);
display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
}
.site-footer p{font-family:'Roboto Condensed',sans-serif;font-size:11px;color:var(--text-muted);line-height:1.8;letter-spacing:.04em;}
.site-footer a{color:var(--river-lt);text-decoration:none;}
</style>
</head>
<body>
<div class="page">
<!-- HEADER -->
<header class="site-header">
<div class="header-left">
<div class="eyebrow">🏔 Sierra Nevada · California</div>
<h1 class="site-title">Sierra <em>Streamflow</em></h1>
<p class="site-sub">Weekly discharge monitoring · current water year vs. 20-year historical record</p>
</div>
<div class="update-badge">
<div class="pulse"></div>
<span class="update-text" id="last-updated">Loading…</span>
</div>
</header>
<!-- SUMMARY -->
<div class="summary">
<div class="sum-stat"><div class="sum-label">Stations Active</div><div class="sum-value" id="s-active">—</div><div class="sum-sub">of <span id="s-total">—</span> monitored</div></div>
<div class="sum-stat"><div class="sum-label">Elevated or Above</div><div class="sum-value" id="s-alerts">—</div><div class="sum-sub">flow alerts</div></div>
<div class="sum-stat"><div class="sum-label">Tuolumne at Modesto</div><div class="sum-value" id="s-modesto">—</div><div class="sum-sub">cfs · main stem</div></div>
<div class="sum-stat"><div class="sum-label">Merced at Yosemite</div><div class="sum-value" id="s-merced">—</div><div class="sum-sub">cfs · Pohono Bridge</div></div>
<div class="sum-stat"><div class="sum-label">Historical Record</div><div class="sum-value" id="s-hist">—</div><div class="sum-sub">water years</div></div>
</div>
<!-- RADIAL SECTION LABEL -->
<div class="section-label">Watershed Overview — 20-Year Historical Context</div>
<!-- RADIAL MAP + MINI CHARTS -->
<div class="radial-layout" id="radial-layout">
<!-- SVG leader lines drawn by JS -->
<svg id="leader-svg" xmlns="http://www.w3.org/2000/svg"></svg>
<!-- LEFT COLUMN (valley / downstream stations) -->
<div class="left-col" id="left-col"></div>
<!-- CENTER MAP -->
<div class="map-col">
<div class="map-title">Gage Locations</div>
<div id="watershed-map"></div>
<div class="map-legend">
<div class="legend-item"><div class="legend-dot" style="background:#2BA898"></div>NORMAL</div>
<div class="legend-item"><div class="legend-dot" style="background:#DFA050"></div>ELEVATED</div>
<div class="legend-item"><div class="legend-dot" style="background:#A84B2A"></div>HIGH</div>
<div class="legend-item"><div class="legend-dot" style="background:#C23B22"></div>FLOOD</div>
<div class="legend-item"><div class="legend-dot" style="background:#7A6248"></div>NO DATA</div>
</div>
</div>
<!-- RIGHT COLUMN (high country / headwaters) -->
<div class="right-col" id="right-col"></div>
</div><!-- /radial-layout -->
<!-- FULL DETAIL CHARTS BELOW -->
<div class="section-label" style="margin-top:48px;">Past 7 Days — Storm Pulse Detail (15-min intervals)</div>
<div class="full-section" id="full-section">
<div style="padding:40px 0;text-align:center;color:var(--sand);font-style:italic;">⛰ Loading…</div>
</div>
<footer class="site-footer">
<p>Data: <a href="https://waterservices.usgs.gov/" target="_blank">USGS National Water Information System</a>
· Updated weekly via GitHub Actions · Historical record: <span id="f-hist">—</span>
· Map © <a href="https://www.openstreetmap.org/copyright" target="_blank">OpenStreetMap</a> contributors</p>
<p>Tuolumne · Merced · Stanislaus · Big Creek</p>
</footer>
</div><!-- /page -->
<script>
/* ── Constants ─────────────────────────────────────────────────────────────── */
const STATUS_COLOR = {
NORMAL:"#2BA898", ELEVATED:"#DFA050", HIGH:"#A84B2A",
FLOOD:"#C23B22", error:"#7A6248", no_data:"#7A6248"
};
const RIVER_ORDER = ["Tuolumne","Merced","Stanislaus","Big Creek"];
const RIVER_ICONS = {Tuolumne:"🏔",Merced:"🌲",Stanislaus:"🌾","Big Creek":"💧"};
// Which stations go left (valley/west) vs right (mountains/east)
// Left: Modesto, LaGrange, Ripon, Merced Falls
// Right: Hetch Hetchy, Grand Canyon, Yosemite, Big Creek
const LEFT_IDS = ["11290000","11289650","11303000","11284400"];
const RIGHT_IDS = ["11276500","11274790","11266500","11264500"];
/* ── Water-year axis ────────────────────────────────────────────────────────── */
const WY_MONTHS = ["Oct","Nov","Dec","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep"];
const WY_MDAYS = [31,30,31,31,28,31,30,31,30,31,31,30];
const WY_TICKS = [];
let _d=1; for(let m=0;m<12;m++){WY_TICKS.push({doy:_d,label:WY_MONTHS[m]});_d+=WY_MDAYS[m];}
function doyLabel(doy){
let r=doy-1,mi=0;
while(mi<11&&r>=WY_MDAYS[mi]){r-=WY_MDAYS[mi];mi++;}
return `${WY_MONTHS[mi]} ${r+1}`;
}
/* ── Chart helpers ──────────────────────────────────────────────────────────── */
const charts={};
function buildDatasets(st){
const ds=[];
for(const[wy,pts] of Object.entries(st.hist_years||{}))
ds.push({label:wy,data:pts.map(p=>({x:p.doy,y:p.v})),
borderColor:"rgba(180,155,120,0.2)",borderWidth:0.8,
pointRadius:0,fill:false,tension:0.3,parsing:false});
if((st.median_line||[]).length)
ds.push({label:"Median",data:st.median_line.map(p=>({x:p.doy,y:p.v})),
borderColor:"rgba(140,110,70,0.8)",borderWidth:1.4,borderDash:[5,4],
pointRadius:0,fill:false,tension:0.3,parsing:false});
if((st.cur_wy||[]).length)
ds.push({label:"This Year",data:st.cur_wy.map(p=>({x:p.doy,y:p.v})),
borderColor:"#1B7A6E",borderWidth:2.2,
pointRadius:0,fill:false,tension:0.3,parsing:false});
return ds;
}
function axisOpts(mini){
return {
x:{type:"linear",min:1,max:366,
grid:{color:"rgba(90,62,34,0.07)"},
ticks:{color:"#7A6248",font:{size:mini?8:9,family:"'Roboto Condensed',sans-serif"},
callback:val=>{const t=WY_TICKS.find(t=>Math.abs(t.doy-val)<8);return t?t.label:"";},},
afterBuildTicks:a=>{a.ticks=WY_TICKS.map(t=>({value:t.doy}));}},
y:{position:"left",grid:{color:"rgba(90,62,34,0.07)"},
ticks:{color:"#7A6248",font:{size:mini?8:9,family:"'Roboto Condensed',sans-serif"},
maxTicksLimit:mini?3:5,
callback:v=>v>=1000?(v/1000).toFixed(1)+"k":v}},
};
}
function renderChart(canvasId,st,mini=false){
const canvas=document.getElementById(canvasId);
if(!canvas)return;
if(charts[canvasId]){charts[canvasId].destroy();delete charts[canvasId];}
charts[canvasId]=new Chart(canvas.getContext("2d"),{
type:"line",data:{datasets:buildDatasets(st)},
options:{
responsive:true,maintainAspectRatio:false,animation:false,
interaction:{mode:"index",intersect:false},
plugins:{
legend:{display:false},
tooltip:{
filter:i=>["This Year","Median"].includes(i.dataset.label),
callbacks:{
title:items=>items.length?doyLabel(items[0].parsed.x):"",
label:i=>`${i.dataset.label}: ${Number(i.parsed.y).toLocaleString()} cfs`,
},
backgroundColor:"rgba(250,245,236,0.97)",
titleColor:"#1C1209",bodyColor:"#3D2B12",
borderColor:"rgba(90,62,34,0.2)",borderWidth:1,
titleFont:{family:"'Roboto Condensed',sans-serif",size:10,weight:"700"},
bodyFont:{family:"'Roboto Condensed',sans-serif",size:10},
},
},
scales:axisOpts(mini),
},
});
}
/* ── Delta chip helper ─────────────────────────────────────────────────────── */
function deltaChip(val,fmt){
if(val==null||fmt=="N/A")return`<span class="delta-chip flat">—</span>`;
const cls=val>0?"pos":val<0?"neg":"flat";
return`<span class="delta-chip ${cls}">${fmt}</span>`;
}
/* ── Build mini card ────────────────────────────────────────────────────────── */
function buildMiniCard(st, side){
const hasData=!["error","no_data"].includes(st.status||"error");
const cid=`mini-${st.id}`;
const color=STATUS_COLOR[st.status]||"#7A6248";
if(!hasData){
const d=document.createElement("div");
d.className="mcard-nodata";d.id=`card-${st.id}`;
d.innerHTML=`<strong style="font-style:normal">${st.short||st.name}</strong> — No data`;
return d;
}
const wrap=document.createElement("div");
wrap.className="mcard";wrap.id=`card-${st.id}`;
wrap.style.position="relative";
// colored top border
wrap.style.borderTop=`3px solid ${color}`;
wrap.innerHTML=`
<div class="mcard-head">
<div class="mcard-name">${st.short||st.name}</div>
<div class="mcard-flow-row">
<div class="mcard-flow">${Number(st.current_flow).toLocaleString()}</div>
<div class="mcard-unit">cfs</div>
</div>
</div>
<div class="mcard-chart">
<div class="mcard-legend">
<div class="mcl-item"><div class="mcl-swatch hist"></div>Hist.</div>
<div class="mcl-item"><div class="mcl-swatch median"></div>Med.</div>
<div class="mcl-item"><div class="mcl-swatch current"></div>Now</div>
</div>
<canvas id="${cid}" style="width:100%;height:100%;"></canvas>
</div>
<div class="mcard-foot">
<div class="mcard-meta">Δ24h ${deltaChip(st.flow_d24h,st.flow_d24h_fmt)} 7d ${st.flow_7d_min!=null?Number(st.flow_7d_min).toLocaleString():"—"}–${st.flow_7d_max!=null?Number(st.flow_7d_max).toLocaleString():"—"}</div>
<div class="mcard-pills"><span class="status-pill ${st.status}">${st.status}</span></div>
</div>
`;
requestAnimationFrame(()=>renderChart(cid,st,true));
return wrap;
}
/* ── Build 7-day sparkline card ─────────────────────────────────────────────── */
function buildFullCard(st){
const hasData=!["error","no_data"].includes(st.status||"error");
if(!hasData){
const d=document.createElement("div");
d.style.cssText="background:rgba(255,255,255,.04);border:1px solid var(--bark-lt);border-radius:5px;padding:18px 20px;font-style:italic;color:var(--sand);font-size:13px;";
d.innerHTML=`<strong style="font-style:normal">${st.name}</strong> — ${st.error||"No data"}`;
return d;
}
const cid=`full-${st.id}`;
const mc=v=>v==null?"":parseFloat(v)>0?"pos":parseFloat(v)<0?"neg":"";
const color=STATUS_COLOR[st.status]||"#7A6248";
const pts=st.sparkline_flow||[];
const card=document.createElement("div");
card.className="scard";
card.innerHTML=`
<div class="scard-meta">
<div><div class="scard-name">${st.short||st.name}</div><div style="margin-top:3px"><span class="status-pill ${st.status}">${st.status}</span></div></div>
<div><div class="scard-flow">${Number(st.current_flow).toLocaleString()}</div><div class="scard-unit">cfs ${st.trend_emoji||""}</div></div>
<div class="scard-metrics">
<div class="scard-metric"><span class="scard-metric-label">Δ 1h</span><span class="scard-metric-val ${mc(st.flow_d1h)}">${st.flow_d1h_fmt||"N/A"}</span></div>
<div class="scard-metric"><span class="scard-metric-label">Δ 24h</span><span class="scard-metric-val ${mc(st.flow_d24h)}">${st.flow_d24h_fmt||"N/A"}</span></div>
<div class="scard-metric"><span class="scard-metric-label">7d Min</span><span class="scard-metric-val">${st.flow_7d_min!=null?Number(st.flow_7d_min).toLocaleString():"—"}</span></div>
<div class="scard-metric"><span class="scard-metric-label">7d Max</span><span class="scard-metric-val">${st.flow_7d_max!=null?Number(st.flow_7d_max).toLocaleString():"—"}</span></div>
</div>
</div>
<div class="scard-chart-wrap">
<div class="chart-legend">
<div class="cl-item"><div class="cl-swatch current" style="background:${color};height:2px;"></div>Discharge (15-min)</div>
</div>
<canvas id="${cid}" style="width:100%;height:100%;"></canvas>
</div>
<div class="scard-footer">
<span class="scard-time">${st.last_update||"—"} · USGS ${st.id} · ${st.elev_ft?Number(st.elev_ft).toLocaleString():"?"}ft · 7-day interval</span>
${st.usgs_url?`<a class="scard-link" href="${st.usgs_url}" target="_blank">USGS →</a>`:""}
</div>`;
requestAnimationFrame(()=>{
const canvas=document.getElementById(cid);
if(!canvas)return;
if(charts[cid]){charts[cid].destroy();delete charts[cid];}
// Build gradient fill
const ctx=canvas.getContext("2d");
const grad=ctx.createLinearGradient(0,0,0,148);
grad.addColorStop(0, color+"55");
grad.addColorStop(1, color+"08");
charts[cid]=new Chart(ctx,{
type:"line",
data:{datasets:[{
label:"Discharge",
data:pts.map(p=>({x:p.t,y:p.v})),
borderColor:color,
borderWidth:1.8,
pointRadius:0,
fill:true,
backgroundColor:grad,
tension:0.3,
parsing:false,
}]},
options:{
responsive:true,maintainAspectRatio:false,animation:false,
interaction:{mode:"index",intersect:false},
plugins:{
legend:{display:false},
tooltip:{
callbacks:{
title:items=>{
if(!items.length)return"";
const d=new Date(items[0].parsed.x);
return d.toLocaleDateString("en-US",{month:"short",day:"numeric",hour:"numeric",minute:"2-digit"});
},
label:i=>`${Number(i.parsed.y).toLocaleString()} cfs`,
},
backgroundColor:"rgba(250,245,236,0.97)",
titleColor:"#1C1209",bodyColor:"#3D2B12",
borderColor:"rgba(90,62,34,0.2)",borderWidth:1,
titleFont:{family:"'Roboto Condensed',sans-serif",size:10,weight:"700"},
bodyFont:{family:"'Roboto Condensed',sans-serif",size:10},
},
},
scales:{
x:{
type:"linear",
grid:{color:"rgba(90,62,34,0.07)"},
ticks:{
color:"#7A6248",
font:{size:9,family:"'Roboto Condensed',sans-serif"},
maxTicksLimit:7,
callback:val=>{
const d=new Date(val);
return d.toLocaleDateString("en-US",{month:"short",day:"numeric"});
},
},
},
y:{
position:"left",
grid:{color:"rgba(90,62,34,0.07)"},
ticks:{
color:"#7A6248",
font:{size:9,family:"'Roboto Condensed',sans-serif"},
maxTicksLimit:5,
callback:v=>v>=1000?(v/1000).toFixed(1)+"k":v,
},
},
},
},
});
});
return card;
}
/* ── Leaflet map ─────────────────────────────────────────────────────────────── */
let leafletMap=null;
const markerMap={};
function initMap(stations){
leafletMap=L.map("watershed-map",{
center:[37.72,-120.35],zoom:8,
zoomControl:true,scrollWheelZoom:false,
attributionControl:true,
});
L.tileLayer("https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png",{
attribution:'© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a>',
maxZoom:13,
}).addTo(leafletMap);
for(const st of stations){
if(!st.lat||!st.lon)continue;
const color=STATUS_COLOR[st.status]||"#7A6248";
const icon=L.divIcon({
className:"",
html:`<div style="width:13px;height:13px;border-radius:50%;background:${color};
border:2.5px solid rgba(255,255,255,0.9);
box-shadow:0 2px 8px rgba(0,0,0,0.5);"></div>`,
iconSize:[13,13],iconAnchor:[6.5,6.5],
});
const m=L.marker([st.lat,st.lon],{icon}).addTo(leafletMap);
m.bindPopup(`
<div style="font-family:'Roboto Condensed',sans-serif;min-width:140px;">
<div style="font-weight:700;font-size:12px;margin-bottom:3px;">${st.name}</div>
<div style="font-size:18px;font-weight:700;color:#1C1209;line-height:1;">${st.current_flow!=null?Number(st.current_flow).toLocaleString():"N/A"} <span style="font-size:11px;font-weight:400;color:#7A6248;">cfs</span></div>
<div style="margin-top:4px;"><span style="background:${color}22;color:${color};padding:1px 6px;border-radius:2px;font-size:9px;font-weight:700;letter-spacing:.12em;">${st.status}</span></div>
${st.usgs_url?`<a href="${st.usgs_url}" target="_blank" style="display:block;margin-top:6px;font-size:9px;color:#2E7D8C;letter-spacing:.1em;text-transform:uppercase;">View on USGS →</a>`:""}
</div>
`);
markerMap[st.id]=m;
}
}
/* ── Leader lines ────────────────────────────────────────────────────────────── */
function drawLeaderLines(stations){
const svg=document.getElementById("leader-svg");
svg.innerHTML="";
const layout=document.getElementById("radial-layout");
const mapEl=document.getElementById("watershed-map");
const layoutRect=layout.getBoundingClientRect();
const mapRect=mapEl.getBoundingClientRect();
for(const st of stations){
if(!st.lat||!st.lon)continue;
const cardEl=document.getElementById(`card-${st.id}`);
if(!cardEl)continue;
const cardRect=cardEl.getBoundingClientRect();
const isLeft=LEFT_IDS.includes(st.id);
// Card anchor point (right edge for left cards, left edge for right cards)
const cx=(isLeft
? cardRect.right - layoutRect.left
: cardRect.left - layoutRect.left);
const cy=cardRect.top - layoutRect.top + cardRect.height/2;
// Map dot position
if(!leafletMap)continue;
const mapPt=leafletMap.latLngToContainerPoint([st.lat,st.lon]);
const mx=mapRect.left - layoutRect.left + mapPt.x;
const my=mapRect.top - layoutRect.top + mapPt.y;
const color=STATUS_COLOR[st.status]||"#7A6248";
// Bezier control points
const midX=(cx+mx)/2;
const path=document.createElementNS("http://www.w3.org/2000/svg","path");
path.setAttribute("d",`M${cx},${cy} C${midX},${cy} ${midX},${my} ${mx},${my}`);
path.setAttribute("fill","none");
path.setAttribute("stroke",color);
path.setAttribute("stroke-width","1.5");
path.setAttribute("stroke-opacity","0.55");
path.setAttribute("stroke-dasharray","4,3");
svg.appendChild(path);
// Arrowhead at map end
const ang=Math.atan2(my-(cy+my)/2*0+my*0, mx-midX)*180/Math.PI;
const arr=document.createElementNS("http://www.w3.org/2000/svg","circle");
arr.setAttribute("cx",mx);arr.setAttribute("cy",my);arr.setAttribute("r","4");
arr.setAttribute("fill",color);arr.setAttribute("opacity","0.75");
svg.appendChild(arr);
}
}
/* ── Main ─────────────────────────────────────────────────────────────────────── */
async function init(){
const fullSection=document.getElementById("full-section");
let data;
try{
const res=await fetch("data/processed/streamflow.json?_="+Date.now());
if(!res.ok)throw new Error(`HTTP ${res.status}`);
data=await res.json();
}catch(e){
fullSection.innerHTML=`<div style="padding:36px;color:var(--sand);font-style:italic;border:1px solid var(--bark-lt);border-radius:4px;">
⚠️ Could not load data. Run <code style="background:rgba(255,255,255,.08);padding:2px 6px;border-radius:2px;">python scripts/fetch.py</code> first.
<br><small style="opacity:.6;font-style:normal;">${e.message}</small></div>`;
document.getElementById("radial-layout").style.display="none";
return;
}
// Summary
document.getElementById("last-updated").textContent=`Updated ${data.generated_at_pt||"recently"}`;
document.getElementById("f-hist").textContent=data.hist_range||"—";
document.getElementById("s-hist").textContent=data.hist_range||"—";
const stations=data.stations||[];
document.getElementById("s-active").textContent=stations.filter(s=>!["error","no_data"].includes(s.status)).length;
document.getElementById("s-total").textContent=stations.length;
document.getElementById("s-alerts").textContent=stations.filter(s=>["ELEVATED","HIGH","FLOOD"].includes(s.status)).length;
const mod=stations.find(s=>s.id==="11290000");
const mer=stations.find(s=>s.id==="11266500");
document.getElementById("s-modesto").textContent=mod?.current_flow!=null?Number(mod.current_flow).toLocaleString():"—";
document.getElementById("s-merced").textContent=mer?.current_flow!=null?Number(mer.current_flow).toLocaleString():"—";
// Init map
initMap(stations);
// Build mini cards in left/right columns
const leftCol=document.getElementById("left-col");
const rightCol=document.getElementById("right-col");
for(const id of LEFT_IDS){
const st=stations.find(s=>s.id===id);
if(st) leftCol.appendChild(buildMiniCard(st,"left"));
}
for(const id of RIGHT_IDS){
const st=stations.find(s=>s.id===id);
if(st) rightCol.appendChild(buildMiniCard(st,"right"));
}
// Build full detail section below
fullSection.innerHTML="";
const byRiver={};
for(const st of stations){const r=st.river||"Other";if(!byRiver[r])byRiver[r]=[];byRiver[r].push(st);}
for(const river of RIVER_ORDER){
const group=byRiver[river];if(!group?.length)continue;
const sec=document.createElement("div");sec.className="river-section";
sec.innerHTML=`<div class="river-heading"><span style="font-size:15px">${RIVER_ICONS[river]||"🌊"}</span><h2>${river}${river==="Big Creek"?"" :" Watershed"}</h2><div class="river-line"></div></div><div class="full-grid"></div>`;
const grid=sec.querySelector(".full-grid");
for(const st of group)grid.appendChild(buildFullCard(st));
fullSection.appendChild(sec);
}
// Draw leader lines — wait for map tiles + cards to fully render
function tryDrawLines(attempts){
if(attempts<=0)return;
const mapEl=document.getElementById("watershed-map");
const mapRect=mapEl.getBoundingClientRect();
// Make sure map has real dimensions and leaflet is ready
if(mapRect.width>0 && leafletMap){
drawLeaderLines(stations);
} else {
requestAnimationFrame(()=>tryDrawLines(attempts-1));
}
}
// First attempt after a short delay, then retry up to 30 frames
setTimeout(()=>tryDrawLines(30), 300);
leafletMap.on("load moveend zoomend",()=>drawLeaderLines(stations));
window.addEventListener("resize",()=>drawLeaderLines(stations));
}
init();
</script>
</body>
</html>